I have a 30 gallon salt tank with a homemade biofilter and a canister filter, salt water, and florecnt lighting, with coral sand and one powerhead, i keep the temp at 76f
im not sure what is going on i have been testing my tank at the same time every morn in order to keep a 14 day log after adding bio-spira and it is dy 6 and this is whats going on,
Day1- Ph/7.8 Ammo/2.0 Nitrate/20 Nitrite/5.0
Day2- Ph/8.0 Ammo/1.0 Nitrate/80 Nitrite/7.0
Day3- Ph/7.8 Ammo/1.0 Nirate/20 Nitrite/4.0
Day4- Ph/7.5 Ammo/1.0 Nitrate/180 Nitrite/5.0
Day5- Ph/8.0 Ammo/0.25 Nitrate/80 Nitrite/2.0.
Day6- Ph/7.8 Ammo/0.25 Nitrate/180 Nitrite/6.0
Can anyone tell me why my ph keeps going down and why my nitrate and nitrite is jumping up and down so much? and is there anyway to fix this prob? i am trying to cycle my tank and i have 4 clowns and 2 yellow fin damsils in it. thanx in advance.