Treatments & Testing

Algaefix controls many types of algae and "green water" algal blooms in domestic freshwater aquariums containing live plants and fish. DO NOT use Algaefix with crustaceans, including crabs, shrimp, freshwater shrimp and freshwater lobsters.

Tropical fish continually release ammonia into you aquarium through their gills, urine and solid waste. Uneaten food and decaying organic matter also add ammonia to the water. Even small amounts of ammonia can stress your fish and large amounts will kill them. The API Ammonia Test Kit helps your to...

Fish require a specific pH level to thrive. Due to fish waste in your aquarium, addition of tap water and the build-up for natural acids, pH levels can fluctuate. This kit can be used to measure pH levels and adjust them to maintain a healthy aquarium.

The API® FRESHWATER MASTER TEST KIT measures the 4 most important levels in freshwater aquariums quickly and accurately, including pH, high range pH, ammonia, nitrite, and nitrate. With scientific accuracy for professional results, the FRESHWATER MASTER TEST KIT comes with 4 test tubes and a convenient holding tub for easy...

Fish require a specific pH level to thrive. Due to fish waste in your aquarium, addition of tap water and the build-up for natural acids, pH levels can fluctuate. This kit can be used to measure pH levels and includes instructions on how to correct unsafe water conditions.

When keeping freshwater fish and plants, the General Hardness (GH) and Carbonate Hardness (KH) of aquarium water should match their natural habitat. The addition of tap water may increase water hardness. The API GH/KH Hardness Test Kit allows you to easily and accurately measure both GH and KH.

KH (Carbonate Harness) helps stabilize pH in the aquarium. Water with low KH is susceptible to rapid pH shifts, greatly stressing fish and increasing the risk of disease. In marine aquariums, a proper KH level is essential for healthy coral growth. The API KH Hardness Mini Test Kit allows you...

High nitrate in aquarium water is associated with algae growth, a build-up of organic pollutants and poor fish health. Use this kit to measure nitrate, so that, if detected, steps can be taken to remove it.

Nitrite is produced in the aquarium by fish waste and uneaten fish food. Low levels of nitrite inhibit respiration and suppress the immune system; high levels cause suffocation and fish death. Use this kit to test nitrite levels in your aquarium.

API pH down lowers the pH level in your aquarium. - for freshwater use - safe for fish and plants

Fish require a specific pH level to thrive. However, pH in an aquarium can fluctuate due to fish waste, addition of tap water and the build-up of natural acids. Use this kit to measure pH to maintain a healthy African Cichlid, marine or goldfish aquarium. Measures pH range 7.4 -...

API pH Up raises aquarium pH and KH. Safe for fish and plants. For freshwater use.

Phosphate can enter the aquarium through tap water, fish water or decaying food. As phosphate increases, so does the chance of having unsightly algae and green water blooms. In saltwater, excess phosphate can inhibit the growth of hard corals.

API Pond Care Algaefix helps to control algae in your pond. - Effectively controls "green water" algae blooms, String or Hair algae and Blanketweed in water gardens, goldfish ponds and ornamental fountains. - Keeps water clean and clear. - Safe to use with live plants and fish.

API Pond Care Algaefix helps to control algae in your pond. - Effectively controls "green water" algae blooms, String or Hair algae and Blanketweed in water gardens, goldfish ponds and ornamental fountains. - Keeps water clean and clear. - Safe to use with live plants and fish.

In a new aquarium, harmful ammonia and nitrite build up from fish waste, often resulting in fish loss or new tank syndrome. The nitrifying bacteria in API Quick Start quickly consume ammonia and nitrite by immediately establishing the biological filter to help prevent new tank syndrome. The unique, patented bacteria...

In order for fish to thrive, water conditions in the aquarium need to be the same or very similar to those found in nature. This kit measures 5 of the most important aquarium conditions: pH, Nitrite, Nitrate, Carbonate and General Hardness. Improper levels can cause fish stress, which can lead...

API® STRESS ZYME bacterial cleaner contains over 300 million live bacteria per teaspoonful to consume sludge and reduce aquarium maintenance, keeping your aquarium clean and improving the natural aquarium cycle. Making STRESS ZYME bacterial cleaner part of your tank’s regular upkeep routine assures an active biological filter, a cleaner aquarium,...