how much oxygen
i will run oxygen at night time in my fish tank.
1.) its gonna be hooked up to a reactor, so how much bps do i need?
i don't want to suffocate fish of too much o2.(if too much o2 will)
2.) for how long should i run it? is 8 hours enough when lights come off?
im doing this because i dont like any tubing, airstones or bubbles in my tank. but im concern about fish.
PS i also dont have anything to break the water surface.