A/C went out in the house, the temperature went up. My CO2 was running without a bubble counter and it somehow went into overproduction. All my fish are gasping at the surface. I sent my wife out for PH tester and some stress coat. I turned off the co2 unit, turned on the air stone and then added a bigger air stone to the other side. Fish seem to have gone down below the surface...in danger of losing a bunch of them. Added some seachem equilibrium. How long will it take the co2 to disspitate due to the plants and aeration using it up? Haven't lost a fish yet today, but I am expecting a bunch of losses. Pray for me...freakin cardinals are so plump and beautiful...darnit.