Water change on Saturday
November 3rd, 2007 | by admin |Today I changed approximately 13 litres of water in my 81 L aquarium and approximately 11 litres in the 42 L fish tank.
Here are measured values of water chemistry:
Small aquarium
pH : 7.1
dKH: 2
dGH: 5
NO2: 0-0.3 mg/l
Big aquarium
pH : 7.4
dKH: 2
dGH: 17
NO2: 1.6-3.3 mg/l
The next measurement will be done next Saturday, however I am going to change water at least once during this period.