Water Quality Testing

Keep your fish healthy by maintaining your water quality. We have meters and kits to test a variety of parameters, including dissolved oxygen (D.O.), pH, ORP, alkalinity, nitrite/nitrate, chlorine and more.

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  1. LaMotte® Salinity Titration Test Kits

    LaMotte® Salinity Titration Test Kits

    Starting at: $37.69

    For measuring both low and high salinity levels in ponds, recirculating systems, brackish waters, etc. Testing takes 5 minutes. 0 to 20 ppt (parts per thousand) in 0.4 increments. Learn More
  2. LaMotte® Phosphate Test Kits

    LaMotte® Phosphate Test Kits

    Starting at: $23.99

    Phosphates enter water supplies from wastewater treatment, sewage, soil runoff, fish foods, etc. Although necessary for biological processes, too much phosphate may cause excessive growth of algae and plants. Testing takes 5 minutes. For fresh and salt water. Range: 0 to 2.0 ppm. Learn More
  3. LaMotte® pH Test Kits

    LaMotte® pH Test Kits

    Starting at: $6.69

    This is a measure of hydrogen ion concentration, or more simply, whether the solution is acidic or basic. Units 0 to 6.9 are referred to as acid or acidic. Units of 7.1 to 14 are considered basic and pH 7.0 is neutral. Takes 2 minutes. Range: 5.0 to 10.0; LM2159-01 range: 7.7 to 8.4 (Cresol Red). Learn More
  4. LaMotte® Nitrite Test Kit

    LaMotte® Nitrite Test Kit

    Starting at: $25.89

    This is an intermediate compound formed in the oxidation (nitrification) process of ammonia becoming nitrate. Nitrite can become toxic in recirculating systems. Nitrites interfere with the ability of the fish's blood to take up oxygen (levels as low as 0.2 ppm can cause "Brown Blood" problems with catfish). Testing takes 5 minutes. Range: 0.05 to 0.8 ppm. Learn More
  5. LaMotte® Low Level Nitrate Test Kits

    LaMotte® Low Level Nitrate Test Kits

    Starting at: $20.59

    This is the final nitrogen product formed by bacterial oxidation of ammonia. Although it is not usually considered a threat to freshwater fish, it is a plant nutrient and can harm marine invertebrates. Testing takes 12 minutes. Range: 0.25 to 10 ppm. Learn More
  6. LaMotte® Iron Test Kit

    LaMotte® Iron Test Kit

    Starting at: $19.99

    Well water often contains high concentrations of ferrous iron (iron in solution). Concentrations as low as 0.2 ppm can be harmful to certain species of fish. To remove iron, aerate the water and then settle or filter out the resulting orange iron oxide particles. Testing takes two minutes. Range: 0.05 to 1 ppm. Learn More
  7. LaMotte® Hardness Test Kit

    LaMotte® Hardness Test Kit

    Starting at: $18.69

    The total hardness of water generally represents the total concentration of dissolved calcium and magnesium ions. Although closely related to alkalinity and the buffering capacity of water, high alkalinity may not always indicate high hardness. Learn More
  8. LaMotte® Dissolved Oxygen Test Kit

    LaMotte® Dissolved Oxygen Test Kit

    Starting at: $31.59

    This kit provides an inexpensive alternative to a dissolved oxygen meter. Testing takes 5 minutes. 0 to 10 ppm. Learn More
  9. LaMotte® Copper Test Kit

    LaMotte® Copper Test Kit

    Starting at: $6.59

    Copper as copper sulfate is often used in fish culture as an algaecide, but it can be lethal to fish at low levels, especially with low pH and alkalinity levels. It can be very toxic to juvenile clams and other invertebrates, particularly saltwater species. Testing takes one minute. Range: 0.05 to 0.5 ppm. Learn More
  10. LaMotte® Chlorine Test Kit

    LaMotte® Chlorine Test Kit

    Starting at: $20.29

    Chlorine and chloramines (chlorine/ammonia complex) are toxic to fish, and the presence of one or the other can be expected in your municipal water supply. For aquaculture applications, chlorine should be removed chemically, by aeration or by aging. Learn More

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