Best AQUARIUM POND WATER CLARIFIERS
At Aquarium Accessories Reviews, we take pride in our rigorous review process. Each product is handpicked based on market research, personally tested by our experienced team for functionality and durability, and evaluated for value for money. Alongside our hands-on experience, we also consider real user feedback. This meticulous approach ensures we provide honest, transparent, and comprehensive reviews to guide your aquarium accessory purchases.
1
Seachem Clarity 500ml
Seachem Store
4.5 ✓
2
Seachem Pond Prime Water Conditioner - Chemical Remover and Detoxifier 2 L
Seachem Store
4.7 ✓
3
API PROPER pH 7.0 Freshwater Aquarium Water pH Stabilizer 8.8-Ounce Container
API Store
4.4 ✓
4
Tetra EasyBalance Plus 8.45 Ounces, Weekly Freshwater Aquarium Water Conditioner,Golds & Yellows
Tetra Store
4.6 ✓
5
API POND ALGAEFIX Algae Control 1-Gallon Bottle
API Store
4.3 ✓
6
Pondcare 142d Accu-Clear Pond Clarifier, White, 64 Oz
Brand: Mars Fishcare North America
4.3 ✓
7
TetraPond Barley and Peat Extract For Naturally Clear Water 16.9 Ounce
Tetra Store
4.4 ✓
8
MICROBE-LIFT ALGA32 Algaway 5.4 Algae Control Treatment for Ponds and Water Gardens, Safe for Koi Fish, Goldfish, Plants, and Decorations, 32 Ounces
MICROBE-LIFT Store
4.1 ✓
9
Microbe Lift 4-Pound Pond Calicium Montmorillonite Clay MLKKB4
MICROBE-LIFT Store
4.6 ✓
10
Pondcare 147B 16 Oz EcoFix Pond Clarifier
API Store
4.6 ✓
We will continue to update this buyer's guide once a month or two.
The best AQUARIUM POND WATER CLARIFIERS in 2024 - Detailed Product Descriptions
1. Seachem Clarity 500ml
More PhotoCLARIFIER: Clarity is the ultimate clarifier for both fresh and saltwater tanks. Clarity will help clear all types of clouding
REEF AND PLANT SAFE: Clarity contains an advanced polymeric flocculating agent that is both reef and plant safe.
MULTI-USE: Clarity is the only clarifier on the market that does it all. Clarity contains both precipitating and flocculating components in the same bottle that will clear and clean all types of cloudiness in all environments.
USE: When Clarity is added to the water, you will see a cloudy haze begin to form. This should be expected and means that Clarity is beginning to work. For optimal performance, Clarity must be used in conjunction with a fine mechanical filtration media such as filter floss.
DIRECTIONS: Use 1 capful (5 mL) for every 80 L (20 US gallons). Rapid clarification will follow (1–2 hours). In the case of chemical or particulate clouding clean filter floss or cartridge after tank clears. If clouding persists, change your fine mechanical filtration media several times before dosing more clarity.
2. Seachem Pond Prime Water Conditioner - Chemical Remover and Detoxifier 2 L
Removes Chlorine, Chloramine, And Ammonia
A Complete Conditioner That Removes Chlorine, Chloramine, And Detoxifies Both Ammonia And Nitrite
Provides essential ions and stimulates the natural slime coat
Enhances Nitrate Removal; Unlike Competing Products, Pond Prime Does Not Cause A Ph Drop
1 Liter Treats 20000 Us Gallons
3. API PROPER pH 7.0 Freshwater Aquarium Water pH Stabilizer 8.8-Ounce Container
By API Store
Contains one (1) API PROPER pH 7.0 Freshwater Aquarium Water pH Stabilizer 8.8-Ounce Container
Sets and stabilizes water pH to neutral to help keep fish healthy and colorful
Removes toxic compounds from tap water to make it safe for fish
Use exclusively in freshwater aquariums that do not contain live plants
Use when setting up a new aquarium, adjusting pH in an established aquarium or changing water
4. Tetra EasyBalance Plus 8.45 Ounces, Weekly Freshwater Aquarium Water Conditioner,Golds & Yellows
By Tetra Store
MAINTAINS HEALTHY AQUARIUM WATER Tetra EasyBalance Plus provides a safety net between water changes
BALANCES Regulates pH and alkalinity (KH) at recommended levels
REMOVES WASTE Reduces nitrates and phosphates due to waste products in water
ADDS NUTRIENTS Adds the vitamins minerals and electrolytes needed for vibrant active fish
DOSAGE Use weekly to maintain healthy aquarium conditions
Age range description: All Ages
Keeps aquarium water biologically balanced
5. API POND ALGAEFIX Algae Control 1-Gallon Bottle
By API Store
Contains one (1) API POND ALGAEFIX Algae Control 1-Gallon Bottle; treats up to 38,400 U.S Gallons
Helps resolve algae problems and controls the formation of new algae; works fast; effectively controls most types of algae including green water (Chlorella), string and hair algae (Cladophora), blanket weed algae (Oedogonium) in ponds, koi ponds and fountains
This EPA-registered pond algaecide will not harm fish, plants, surrounding wildlife and pets when used as directed
Does not contain copper
Before use, make certain that the pond/fountain has vigorous aeration; thoroughly mix into pond/fountain water and disperse evenly; Repeat dose every three days until algae is controlled; dose weekly to keep pond or fountain clean and clear and to reduce maintenance
6. Pondcare 142d Accu-Clear Pond Clarifier, White, 64 Oz
By Brand: Mars Fishcare North America
Quickly clears your pond water
Causes tiny debris particles to clump together for easy filtration removal
Helps maintain a crystal clear pond
7. TetraPond Barley and Peat Extract For Naturally Clear Water 16.9 Ounce
By Tetra Store
FOR NATURALLY CLEAR WATER: Replaces barley bales and keeps pond water clear using a non-chemical approach.
BENEFICIAL COMPONENTS: Releases humic acids to help keep water clear.
KEEPS WATERFALLS BEAUTIFUL: Maintains the natural beauty of ponds and waterfalls and reduces pond maintenance.
SAFE FOR FISH AND PLANTS: When used as directed in ornamental outdoor ponds.
EASY TO USE: 16.
8. MICROBE-LIFT ALGA32 Algaway 5.4 Algae Control Treatment for Ponds and Water Gardens, Safe for Koi Fish, Goldfish, Plants, and Decorations, 32 Ounces
KEEPS PONDS CLEAN & CLEAR: Algaway 5.4 is an E.P.A.-registered beneficial algaecide for outdoor ponds and other water features; It controls string algae, suspended algae blooms, and stops algae growth, creating a cleaner aquatic environment
CLEARER WATER: Algaway 5.4 Controls algae growth and eliminates green water in your self-contained ornamental pond; This allows you get more enjoyment from your fish and plants and see them clearly in any season
POND LIFE NOTES: Algaway 5.4 is 100% safe for all pond fish and plants which sets it apart from similar products; Not to be used with snails, shrimp and other crustaceans or mollusks
IMPORTANT NOTES: In ponds, ensure that water is well aerated via waterfall, fountain or other method to prevent fish loss; Aeration must be continuous; Highly concentrated formula shows results as little as 2 days; See usage chart for application guidance
PART OF MICROBE-LIFT'S POND CARE SYSTEM: Use Algaway 5.4 with other great products for your large or small backyard pond: PL Pond Bacteria and Outdoor Water Garden Cleaner, Sludge-Away Sludge and Muck Remover, Barley Straw Extract, and more
9. Microbe Lift 4-Pound Pond Calicium Montmorillonite Clay MLKKB4
Provides fish nutrition through mineral ingestion
Improves fish color
Detoxifies and clarifies pond water
Immunity against viruses
4 pounds pond
11. API ALGAEFIX Algae Control 8-Ounce Bottle
By API Store
Contains one (1) API ALGAEFIX Algae Control 8-Ounce Bottle
Controls algae growth and keeps aquarium glass, ornaments and plants clean
Fast-acting and effective on "green water" algae blooms, string or hair algae
Will not harm fish and plants when used as directed
Dose every three days until algae is under control then dose weekly
12. Ecological Laboratories Pond Dechlorinator Plus Gallon
Aquatic
Water Treatment and Conditioners
Pond Conditioners
13. Aqua UV 25 Watt 2 inch UV Sterilizer
Fresh Water Sterilizer: 500-1,200 gallons; Flowrate - 1,200 gph for 30,000 µw/cm2SUP>
Fresh Water Clarifier: up to 4,000 gallons; ideal for water gardens
Salt Water Sterilizer: up to 150 gallons; Flowrate - 400gph for 90,000 µw/cm2SUP>
Dimensions: 26.25" X 4" X 2.5"
Inlet: 2" slip, Outlet: 2" slip
14. Tetra AquaSafe Plus, 8.45 Ounces, aquarium Water Conditioner And Dechlorinator, Model Number: 46798162681
By Tetra Store
FOR FRESHWATER AND MARINE aquariumS: Tetra AquaSafe Plus works instantly to make tap water safe for fish.
ADVANCED FORMULA: Neutralizes or removes harmful chlorine, chloramines and heavy metals.
PROTECTS FISH: Enhances protective slime coat to help wounds heal.
CLEAR AND HEALTHY WATER: With natural biopolymers and essential vitamins and minerals.
WATER CONDITIONER: Use when setting up a new aquarium, with monthly partial water changes, or evaporation replacement.
NEW LOOK: Packaging may vary
The added ingredients help to reduce aquarium pollution
15. CrystalClear PondTint Blue Pond Dye, for Water Gardens & Koi Fish Ponds, Ecofriendly, Clean & Clear Water, No Mixing & Easy to Use, Enhances Natural Color, Treats up 16,000 Gallons, 16 oz
Blue Water Garden Dye
Tints Water Brilliant Blue
16 ounce bottle treats 16,000 gallons
Shades and protects your pond
Safe for all aquatic life
16. Tetra 16172 AquaSafe Fish Tank Water Conditioner, 8.45 fl oz
By Tetra Store
CONDITIONS aquarium WATER: Essential care formula protects fish and reduces stress.
MAKES TAP WATER SAFE: Monthly treatment with partial water changes removes harmful chlorine.
INSTANT RESULTS: Works quickly to make tap water safe for fish.
ESSENTIAL WATER CARE: Use when setting up a new aquarium, with monthly partial water changes or evaporation replacement.
USAGE: Add 2 teaspoons for every 10 gallons of aquarium water.
NEW LOOK: Packaging may vary
Age range description: All Life Stages
17. Aqua UV 40 Watt 2 inch UV Sterilizer
Fresh Water Sterilizer: 1,200-2,000 gallons; Flowrate - 2,900 gph for 30,000 µw/cm2SUP>
Fresh Water Clarifier: up to 6,000 gallons; ideal for water gardens
Salt Water Sterilizer: up to 325 gallons; Flowrate - 967gph for 90,000 µw/cm2SUP>
Dimensions: 43" X 4" X 2.5"
Inlet: 2" slip, Outlet: 2" slip
18. Microbe-Lift BSEP08 Concentrated Barley Straw Extract Plus Liquid Peat Conditioner for Ponds and Outdoor Water Garden, Safe for Live Koi Fish, Plants, and Decorations, 8 Ounces
CREATE A HEALTHIER POND: Concentrated Barley Straw Extract Plus Liquid Peat is specially formulated to naturally balance pond water; It is a natural organic approach to a healthy environment for ponds with higher pH and/or alkalinity in the water
RICH IN ORGANIC PEAT: Liquid peat softens pond water by reducing nitrate and phosphate concentrations in the water column; It also provides a buffering agent and ion attenuation in lined ponds that replicates the benefits of earthen ponds
CONVENIENT AND FAST ACTING: Microbe-Lift Concentrated Barley Straw Extract features tip and pour containers for convenient measuring; Goes to work on contact to release decomposition by-products immediately
COST EFFICIENT CONCENTRATED FORMULA: One capful treatment has a stronger impact than a barley straw bale for keeping your water clear; There is no residue to mess up a waterfall feature and is especially helpful where bottom drains are present
WHEN TO USE: Can be used all year round; See usage chart for application guidance for large and small ponds; Not harmful to aquatic life, plants, lily pads, humans, livestock, ducks, pets, filters, decor, or accessories
19. BioSafe Systems 3002-8 GreenClean Granular Algaecide String Algae Control for Koi Ponds, Fountains, Waterfalls, Water Features on Contact, 8 lbs, EPA Registered
GREENCLEAN GRANULAR ALGAECIDE: This 8-pound bucket treats and controls algae in up to 16,000 gallons of water for your in-home or residential ponds, fountains, or water features; this product can be used while your pond is stocked.
IDEAL FOR PONDS WITH FISH AND AQUATIC LIFE: This product is not harmful to fish or aquatic plants when used as directed and can be used while your pond or water feature is fully stocked; kill algae and improve water quality while your fish and plants thrive.
CLEAN FORMULA: Our clean formula is a great alternative to harsh chemicals and it is chlorine, copper, and phosphate-free; that means it won’t harm fish or plants and targets the algae in your pond.
WORKS FAST: This product is quick and efficient and begins working on contact, killing algae fast; you'll see full results in 24 to 48 hours after proper treatment, releasing oxygen to your water feature.
TREATS TWO ALGAES: GreenClean Granular Algaecide is effective and offers immediate results when eliminating blue-green and string algae; It kills on contact and works best when applied in the early morning hours on calm, sunny days.
20. Jungle PL720-8W Pond Algae Relief, 8-Ounce, 237-ml
No More Green Water
No More Algae Growth
Also retards the growth of suspended algae blooms
Not for use with live plants
21. API ACCU-CLEAR Freshwater Aquarium Water Clarifier 4-Ounce Bottle
By API Store
Contains one (1) API ACCU-CLEAR Freshwater Aquarium Water Clarifier 4-Ounce Bottle
Clears cloudy aquarium water
Clumps floating particles into large clusters that can be easily removed by an aquarium filter
Works fast and maximizes filter efficiency
Use weekly and when cloudy water is observed in freshwater aquariums only
Instructions: Add 1 ml. per 10 gallons of aquarium water. Water will clear within several hours. If second dose is necessary, wait 24 hours.
22. TetraPond Replacement Bulb For GreenFree UV Clarifier, For Clean And Clear Ponds, 18-Watt, Model:19528
Country Of Origin : China
The Package Height Of The Product Is 9.13 Inches
The Package Length Of The Product Is 1.88 Inches
The Package Width Of The Product Is 1.13 Inches
23. TetraFauna AquaSafe Water Conditioner for Reptiles & Amphibians 3.38oz (75077009)
By Tetra Store
CONDITIONS AQUA-TERRARIUM WATER: Essential care formula for pet reptiles and fragile amphibians.
MAKES TAP WATER SAFE: Instantly neutralizes harmful chlorine, chloramines, ammonia and heavy metals.
INSTANT RESULTS: Liquid formula works in seconds to condition aqua-terrarium water.
PROTECTS SKIN: Contains colloids to protect the skin of turtles and other species.
USAGE: Add 1 tsp for every 10 gallons of water.
24. Outdoor Water Solutions PSP0134 Lake and Pond Water Clarifier
By Brand: Outdoor Water Solutions
Easy to use dry product, no liquids to spill
Helps clean up murky water and improves water clarity
All natural solution to help keep your pond clean and healthy
PSP0134
Easy to use dry product, no liquids to spill
Helps clean up murky water and improves water clarity
All natural solution to help keep your pond clean and healthy
25. TetraPond Replacement Bulb For GreenFree UV Clarifier, For Clean And Clear Ponds, 9-Watt, 1 Count (Pack of 1)
By Tetra Store
REPLACEMENT BULB: For use in TetraPond GreenFree UV Clarifier to control heavy algae blooms in ponds and water gardens and keep water clean and green-free
ULTRAVIOLET LIGHT: Destroys the reproductive ability of single-celled algae
ANNUAL MAINTENANCE: Replace bulb every pond season for continued algae control
HIGH-EFFICIENCY: For up to 11 months of continuous operation
4 AVAILABLE SIZES: 5 watts for ponds up to 660 gallons; 9 watts for up to 1,800 gallons; 18 watts for up to 4,400 gallons; and 36 watts for up to 8,800 gallons
27. API TAP WATER CONDITIONER Aquarium Water Conditioner 8-Ounce Bottle, White (52A),8 oz
By API Store
Contains one (1) API TAP WATER CONDITIONER Aquarium Water Conditioner 8-Ounce Bottle
Neutralizes chlorine, chloramines and other chemicals to make tap water safe for fish
Prevents tap water chemicals from causing gill destruction, tissue irritation and fish death
Super strength, high concentration formula
Use when adding or changing water and when adding new fish to freshwater and saltwater aquariums
28. API TURTLE WATER CONDITIONER Water Conditioner 8-Ounce Bottle
By API Store
Contains one (1) API TURTLE WATER CONDITIONER Water Conditioner 8-Ounce Bottle
Neutralizes chlorine, chloramines and other chemicals and heavy metals to make tap water safe for aquatic turtles, newts and aquatic frogs
This turtle water conditioner prevents tap water chemicals from causing tissue irritation
Treats up to 474 U.S Gallons (1 ml per 2 US Gallons)
Use when setting up an aquarium/vivarium, or when adding or changing water
29. EasyCare 50008-2PK-B Clarifier, No Size
2 Bottles of FounTec Algaecide. 16 ounces total.
Algaecide clears pond and fountain water
Safe for plants, birds, and wildlife
NOT safe for fish
Keeps water crystal Clear
30. Aquascape 40004 Container Water Garden and Pond Maintenance Treatment, 36 Tabs
Provides clean, clear and healthy water conditions
Ideal for use in container water gardens
Contains 8 pure strains of bacteria
Safe for fish, plants, pets, and wildlife
36 count container treats 3,600 gallons of water
31. EasyCare FounTec Algaecide and Clarifier
Algaecide clears pond and fountain water
Safe for plants, birds, and wildlife
NOT safe for fish
Use in water features, indoors or out
Keep water free of mosquitos
32. Summit 125 Clear-Water Barley Straw Bales, Treats up to 1000-Gallon, 2 Packs of 2-4 total
The original and best selling barley straw pond treatment from summit
Keep your pond water clean and clear year-round
Clear your pond, fountain and fish tank naturally
Acts as a natural filter to keep your pond clean and clear
Each bale treats 1000 gallons
33. Tetra EasyBalance 8.45 Ounces, Weekly Freshwater Aquarium Water Conditioner, (Model: 16177)
By Tetra Store
MAINTAINS HEALTHY AQUARIUM WATER: Tetra EasyBalance Plus provides a safety net between water changes.
BALANCES: Regulates pH and alkalinity (KH) at recommended levels.
REMOVES WASTE: Reduces nitrates and phosphates due to waste products in water.
ADDS NUTRIENTS: Adds the vitamins, minerals and electrolytes needed for vibrant, active fish.
DOSAGE: Use weekly to maintain healthy aquarium conditions.
34. EcoBio-Block Stone Natural Volcanic Water Clarifier and Odor Remover Rock for Aquariums, Nano, 2-Pack
Unique beneficial bacteria in volcanic rock multiply to create a healthy ecosystem for clear, clean water without odors.
Speeds up nitrogen cycle, with pure bacteria in spores, germinating in early, middle and late stages, only in the presence of organic waste.
Reduces need for frequent maintenance by continually replenishing beneficial bacteria for up to one year.
Ideal for Betta homes and all nano freshwater or marine aquariums. Safe for all fish, reptiles, amphibians and other aquatic life.
Makes aquarium care simple in fresh or salt water. Nano size treats tanks from 1.5 to 3.0 gallons
35. Aquatic Experts KloudAway Freshwater Aquarium Water Clarifier - Clears Cloudy Water, Water Clarifier for Fish Tank, Made in USA (1 Pack)
FAST- ACTING - KloudAway quickly clears cloudy or hazy aquarium water by CLUMPING FLOATING PARTICLES together making them large enough to be trapped by your aquariums' mechanical filter. To remove these particles from the water your aquarium must have a mechanical filter.
CUTTING EDGE FORMULA - Our advanced fish tank water clarifier is targeting unsightly particles in water such as uneaten fish food, dust and other debris to produce crystal clear water. KLOUDAWAY DOES NOT WORK ON "GREEN WATER" as algae continues to multiply.
SAFE AND EFFECTIVE - Our cloudy water treatment is SAFE FOR all types of FRESHWATER FISH, TURTLES, PLANTS, SHRIMP and OTHER INVERTEBRATES and has no effect on the beneficial bacteria in your aquarium's biological filtration.
REMARKABLE RESULTS! Use our aquarium clarifier to maintain sparkling clear water in your freshwater aquarium. For exact details of how to use KloudAway, causes of cloudy water and much more, WATCH OUR VIDEO "Clear Aquarium Water Fast"
Water testing is recommended. Cloudy water is often caused by New Tank Syndrome, which can cause dangerously high levels of ammonia and nitrite. Protect your fish from ammonia spikes with TankFirst Water Conditioner!
36. Aqueon Aqaurium Pure Live Bacteria and Enzymes Water Supplement, 10 Gallon 12 Pack
By Aqueon Store
Easy to dose gel ball
Live beneficial bacteria that breaks down harmful waste
Cannot be overdosed
Helps maintain clear water
Safe for all freshwater aquariums
Add one PURE per 10 gallons of tank water each week.
Add two PURE per 10 gallons of tank water when starting a new aquarium
37. UKCOCO Reptile Calcium Fish Tank Calcium Aquariums Natural Water Clarifier Odor Remover 12pcs Betta Calcium Supplement Water Conditioner for Freshwater Shrimp Crayfish Food Reptile Calcium
Fish Tank Calcium Stone Calcium Mineral Reptiles Molar Cube Calcium Supplement Grinding Rock Block for Freshwater Aquarium Tank
when fish, snails, shells, shrimp live in the wild, earth’s rocks can autobalance PH value to maintain ecological health, then when we feed fish, snails, shells, shrimp at home, we need mineral balls, mineral tourmaline balls contain over 30 minerals
They can keep your tank balanced just those wild waters. Mineral Ball can be water Conditioner for Freshwater Shrimp.
Our water conditioner balls for Betta help vitalise metabolism and strengthen the system. Fish develop resistive powers which make them live.
Contains both positive and negative poles, these tourmaline balls help in improving the water quality. These balls are also rich in calcium and help maintain the water parameters of the tank that are for bettas.
38. Healthy Ponds AquaLily Pond Water Cleaner Filled with Natural Beneficial Bacteria | Decorative Reloadable Dispenser Treats up to 1,000 Gallons
NATURAL & SAFE: Can be used in koi ponds, water features, fountains & small backyard ponds
BENEFICIAL BACTERIA: All natural time-release dispenser that introduce a blend of beneficial bacteria and enzymes into the water for up to 30 days that helps to break down debris
SAFE: Safe for koi, fish, plants, birds, animals, pets and humans
TREATS: Treats up to 1,000 gallon pond, includes reloadable dispenser and 3 - 30 day refills
USE: Use when water temperature is between 45°F - 110°F
Use Healthy Ponds AquaLily Pond Water Cleaner along with our other great products such as: Natural Blast or Pond Dye
39. Koiworx Muck Reducer - Treats up to 2,500 gallons for up to 4 Months - Tablets Reduce Muck, Sludge and Organic Build up - Formulated for Ponds and Water Features - Safe for Koi
Clears pond muck: Koiworx Muck Reducer tablets are designed to break down and clear pond muck, sludge, and organic debris that accumulates at the bottom of ponds and water features.
Natural solution: Koiworx Muck Reducer tablets are made with anaerobic and aerobic bacterial ingredients and are safe for fish, wildlife, and the environment.
Easy to use: Simply toss the tablets into your pond or water feature and let them work their magic. No need for messy powders or liquids.
Improves water clarity: By reducing pond muck and debris, Koiworx Muck Reducer tablets can help to improve water clarity and quality.
Reduces odors: Koiworx Muck Reducer tablets can help to reduce unpleasant pond odors caused by decaying pond matter.
Long-lasting: Each tablet can last up to 30 days, providing continuous muck reduction and pond maintenance.
Versatile: Koiworx Muck Reducer tablets can be used in a variety of water features, including koi ponds, garden ponds, water gardens, and more.
40. PATKAW 250 Pcs Aquarium Nitrobacter Portable Fish Tank Sludge Remover Freshwater Water Clarifier Aquarium Cleaner Fish Tank Water Clarifier Small Fish Tank Cleaners Portable Water Cleaner
By PATKAW Store
Fish Pond Cleaner: This Water Cleaner Capsule can make your fish tank or aquarium look more clean and fresh.
Office Fish Tank Cleaner: It is simple in design, but very practical in use, which brings great convenience to you.
Fish Tank Supply: Manufactured with high-grade and safe active ingredients material, very durable and practical.
Pond Water Cleaner: This professional Fish Tank Cleaner can purify water and promote the circulation of nitrogen in the water.
Aquarium Water Clarifier: These Water Cleaner Capsule can help form a good ecological cycle, very safe and practical.
