Organic material containing nitrogen in an aquarium,such as fish excreta,and dissolved after excretion.waste,such as uneaten food,degrades to pro duce nitrite(NO2).Excess nitrite will reduce the dis-solved oxygen in the blood of fish, such: fish tank,Difficulty in breathing, poor health,easy toget sick, slow growth.

Nitrate concentrations greater than 50mg/L are harmful to sensitive fish and promote algae Growth,nitrates appear when excessive,fish only produce an urgent effect and anincreade in disease. Sensitivity to the disease may result in shortness of breath, poor appetite,and lack of swimming.

KH value represents the hardness of carbonic acid in water. Kh is too low,water quality will tend to acidi fy;When Kh is too high,water quality tends to be al kaline. Excess of KH will cause death to aquatic or ganisms.

Excessive PH affects the whole tank system data, which can be said to be the core of the fish tank the ideal PH range depends on the types of fish, most of which are freshwater fish. The species is adapted to water with a PH of 6.5 to 8.5，And for most of seawater fish, the species is adapted to water with PH of 7.5 to 8.8.

Tap water can contain chlorine.While chlorine is harmful to fish, chlorine gas is harmful to fish. Only Stimulate very big, can cause a variety of lying tank, hide the cornerm anorexia and other phenomena,it can also damage the gills and skin of fish.

Total hardness is the amount of calcium and magnesium ions in the water. Aquaweed tank GH exceed the standard,will make it difficult for aquatic plants to absorb nutrients; Low GH in crystal shrimp will increase the mortality and molting rate.

step 1

Immerse the strip for 2 seconds and then remove the strip.

Step 2

Do not shake excess water off and compare aginst the color chart.

Step 3

For GH, CL2,KH,PH,wait 15 seconds to read results, For NO2 and N03,wait 60 seconds to read reults.