Learn more about Castle AquaticsWater Treatments
AlgaeSTOP, Pond & Fountain Algaecide
AlgaeSTOP works by targeting and disrupting nuisance algae in ornamental ponds, fountains, and water gardens, helping restore clarity and maintain a balanced aquatic environment. It...
BarleyMAX+, Natural Pond Clarifier
A natural and organic solution for efficient pond cleaning. Barley Extract is the natural solution to maintaining a clean and healthy pond all year long.
BuffMAX, pH Buffer
Keeping a properly buffered system is essential for the completion of the nitrification process which allows ammonia to be converted to nitrite and then to...
CoolBIO, Cold Water Bacteria Booster
CoolBIO contains highly concentrated cold water natural bacteria designed to accelerate the decomposition of leaves, twigs, muck and other sediment during the fall and winter...
DeFoamMAX, Foam Remover
Eliminates Foam on contact! DefoamMAX gets rid of unsightly foam fast, leaving pond water clean and clear. Foaming or DOC can indicate a heavy concentration...
DetoxDRY, Concentrated Chlorine Remover
DetoxDRY will immediately remove chlorine that is present in city water supplies. Chlorine is toxic to fish. Left untreated chlorine can cause gill damage and...
DetoxMAX+, Dechlorinator Plus+
DetoxMAX+ is a fast-acting dechlorinator and water conditioner designed to instantly make tap or well water safe for fish and plants. It quickly binds and...
pHMAX, pH Reducer Salts
pHMAX fuses pH lowering qualities with natural electrolytic supplements to safely lower pH levels in pond water at no more than 0.2 pts per application.
SaltMAX, Pond Salt
Electrolytes such as potassium are essential in wound repair and in times of heavy stress, ie. during water changes or clean outs. Salt is excellent...
SludgeMAX, Muck and Sludge Reducer Tabs
SludgeMAX uses a natural blend of beneficial bacteria and enzymes to break down accumulated sludge, fish waste, decaying plant material, and excess nutrients that settle...
SuperBIO, Pond Bacteria Booster
SuperBIO contains highly concentrated warm water natural bacteria designed to accelerate the decomposition of leaves, twigs, muck and other sediment during the spring and summer...
TintMAX, Blue Pond Tint
Inhibits photosynthesis to discourage plant growth, creating cleaner and clearer water. Provides shade and protects your pond in the warmer months to come.
CleanMAX, Oxy Pond Cleaner
CleanMAX is an oxygen-based oxy pond cleaner designed to remove attached organic debris from waterfalls, streams, rocks, and other hard surfaces. The active oxygen formula...
ClearMAX, Pond Water Clarifier
ClearMAX is a concentrated pond water flocculent formulated to clear cloudy or muddy pond water, often within 12–24 hours depending on pond size and conditions....
BactiMAX+ All Season Beneficial Bacteria
BactiMAX+ contains a concentrated blend of natural bacteria to digest fish waste and suspended dead organics. These bacteria boost the naturally occurring nitrogen cycle in...
NatureMAX, Enviro Pond & Waterfall Maintenance
NatureMAX provides multi-purpose pond cleaning using a dry beneficial bacteria and bio-enzyme formula designed to support balanced water conditions. Made in the USA with activated...