Best Algae Removers to Buy in October 2025
API ALGAEFIX Algae Control 16-Ounce Bottle
- FAST-ACTING FORMULA TACKLES GREEN WATER AND HAIR ALGAE QUICKLY.
- SAFE FOR FISH AND PLANTS WHEN USED AS DIRECTED-PEACE OF MIND!
- EASY DOSING: TREAT EVERY 3 DAYS UNTIL CONTROL, THEN WEEKLY.
Clorox® Pool&Spa™ Swimming Pool Algaecide and Clarifier, Prevents and Treats Pool Algae, Clears Water, 128 Fl Oz (Pack of 1)
- TREATS ALGAE AND PREVENTS FUTURE GROWTH FOR LONG-LASTING CLARITY.
- NON-FOAMING FORMULA SAVES TIME ON MAINTENANCE FOR POOL ENJOYMENT.
- COMPATIBLE WITH ALL POOL TYPES, ENSURING EXCEPTIONAL PERFORMANCE.
API POND ALGAEFIX Algae Control 32-Ounce Bottle, FISHAQUARI (169G)
- ELIMINATES ALGAE FOR CRYSTAL-CLEAR POND WATER AND VIBRANT LANDSCAPES.
- SAFE FOR FISH, PLANTS, AND WILDLIFE; ENJOY WORRY-FREE POND CARE.
- EASY DOSING: TREAT EVERY 3 DAYS, THEN WEEKLY FOR LASTING RESULTS!
Wet & Forget Outdoor Moss, Mold, Mildew, & Algae Stain Remover Multi-Surface Cleaner, Ready to Use, 64 Ounce
- EFFORTLESS CLEANING: JUST SPRAY, WAIT, AND WATCH STAINS DISAPPEAR!
- COVERS 60-180 SQ. FT.: IDEAL FOR SMALL SURFACES WITH BIG RESULTS.
- LONG-LASTING EFFECTS: KEEPS SURFACES CLEAN FOR UP TO 1 YEAR!
Wet & Forget Moss, Mold, Mildew, & Algae Stain Remover Multi-Surface Outdoor Cleaner Concentrate, Original, 128 Fluid Ounces
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EFFORTLESS CLEANING: NO SCRUBBING OR RINSING REQUIRED-JUST SPRAY AND FORGET!
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VERSATILE USE: EFFECTIVELY CLEANS VARIOUS SURFACES, FROM ROOFS TO UPHOLSTERY.
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LONG-LASTING RESULTS: KEEPS SURFACES CLEAN FOR A YEAR OR MORE, HASSLE-FREE.
Tetra 77183 AlgaeControl, 1.69-Ounce, 50 ml
- EFFECTIVELY CONTROLS ALGAE BLOOMS: KEEPS YOUR WATER CRYSTAL CLEAR!
- SAFE FOR FISH & PLANTS: PROTECTS YOUR AQUATIC LIFE WHILE CLEANING.
- PRECISION DROPPER FOR EASY DOSING: ENSURES ACCURATE APPLICATION EVERY TIME!
Wet & Forget Outdoor Moss, Mold, Mildew, & Algae Stain Remover Multi-Surface Cleaner, Xtreme Reach Hose End with New & Improved Nozzle, 48 Fluid Ounces
- POWERFUL JET TIP SPRAYS UP TO 30FT, TARGETING TOUGH STAINS EASILY!
- LONG-LASTING RESULTS, KEEPING SURFACES CLEAN FOR UP TO A YEAR!
- SAFE, BLEACH-FREE FORMULA-ECO-FRIENDLY FOR YOUR HOME AND GARDEN!
CrystalClear AlgaeOff Pond & Water Garden Scum Cleaner, Waterfall & Rock Slime Remover, String Algae Killer, Green Stain Treatment, EPA Registered Algaecide, Plant, Koi Fish, Bird & Pet Safe, 2.5 lb
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RAPID ALGAE CONTROL: WORKS ON CONTACT TO ELIMINATE STRING ALGAE SWIFTLY.
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EPA APPROVED: FAST-ACTING FORMULA SAFE FOR KOI, GOLDFISH, AND WILDLIFE.
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EFFORTLESS APPLICATION: SPRINKLE DIRECTLY ON ALGAE; NO COMPLEX STEPS!
Tetra No More Algae Tablets, 8 tablets, Controls Algae in Aquariums
- CONTROL ALGAE GROWTH FOR A HEALTHIER AQUARIUM ENVIRONMENT.
- ACHIEVE CRYSTAL CLEAR WATER FOR STUNNING AQUATIC DISPLAYS.
- CONVENIENT FIZZ TABS FOR EASY MONTHLY MAINTENANCE.
YES! A new product has hit our shelves that actually works against string algae and blanket weed!
AlgaeFix™, a brand new product manufactured by Aquarium Pharmaceuticals, will clear up those nasty strands of algae safely and with little fuss. When used in conjunction with barley bales you end up with a total string algae and blanket weed solution!
AlgaeFix™ clears up string algae that is already present in the pond but has little preventative effect to keep the algae from returning. As pond water runs through barley bales the barley begins to break down and releases enzymes into the water that retard the growth of any new algae.
Will It Hurt My Fish?
Rigorous tests by the manufacturer has shown that when used as directed the product is safe for fish and reptiles such as snails, frogs and turtles. It is not safe for shell fish such as lobsters, crayfish and shrimp.
Will It Hurt My Plants?
Again, testing shows that when used as directed this product will not harm the common pond plants we place in our ponds including Anacharis, Water Hyacinths, Water Lettuce, Cannas and other bog plants, Water Lilies, etc.
Will It Clear Up Green Water (Algae Bloom)?
The manufacturer claims it “helps” but we haven’t seen any effect on free-flowing, green-water algae bloom.
We’ve tested AlgaeFix™ in our own ponds. Some of you saw that amazing, long, rope-like string algae we had in our water lily showcase pond. It was in strands of 3 feet and more! I personally pulled a bunch of it out myself and got it under control but it was still there. AlgaeFix™ got rid of it altogether after just one treatment. It did not harm any of the beautiful, large fancy goldfish in the pond nor did it harm the big, beautiful water lilies.
The Total Solution
The Doc’s Prescription for getting rid of string algae once and for all is to place one barley bale for each 1000 gallons of pond water in the waterfall or filter (wherever water can run through it to most effectively distribute the enzymes throughout the pond). Treat the water immediately with AlgaeFix™ according to the instructions on the label. It takes several weeks for the enzymes in the barley to begin working properly so additional treatments of AlgaeFix™ may be necessary during this time.
Remember that AlgaeFix™ is a temporary “fix”. Barley bales should be used in conjunction with the product to offer a total solution to the string algae problem.
WARNING
When algae dies it consumes great amounts of the pond’s supply of dissolved oxygen. Killing all the algae at once can be disastrous if proper precautions are not taken.
Aerate the pond heavily when using AlgaeFix™.
Never use the product at dusk or at night when oxygen levels are low.
Do not treat the pond and leave. Keep an eye on the fish during treatment and if the fish come to the surface as if gasping for air make an immediate water change to dilute the treatment!
Use ONLY AS DIRECTED.