I'm a little confused on how to read my co2 levels. I have pressurized co2 on my 75 gallon planted tank and a red sea drop checker. When the drop checker turns a light green the fish seem stressed and are gasping for air, the fish are not at the surface but seem to breath fast and gasp. But when I measure my PH and KH, PH 6.9 and KH 15 which gives me a co2 level of 57ppm. Could my drop checker be wrong? I ordered a new drop checker and solution: CAL AQUA LABS Double Drop Checker | Green Leaf Aquariums. My ammonia, nitrate and nitrite levels are all in line. The only other problem I can think of is I used softened water, I wounder if the fish do not like softened water softened with a salt water softener. I'm in the process of doing 30% water changes per day to get rid of the softened water.
For now I think I will set my ph controller to kick on at 7.1 and see what happens.
For now I think I will set my ph controller to kick on at 7.1 and see what happens.