Planted Tank Obsessed
Join Date: Jan 2006
Location: San Antonio, TX
if you guys dont turn the co2 off at night (or even if you do) do you have o2 depletion problems? i think im having those, so much that my beneficial bacteria are dying off. my fish are gasping in the mornings recently following a water change a few days ago. still havent solved the problem, ammonia is 0, nitrites are off the charts in the mornings, nitrates 10-20ppm. i have a xp3, 55g, i just bought a timer for the airstone which is gonna kick in between 12-8am i guess. then the lights and co2 come on at 9am.
i too am concerned about the PH swing, with the airstone it will probably go up quite a bit. tap is 8.3, i have it down to 6.9 with co2 injection. i hope the swing doesnt shorten any lifespans of my fish!