This is my first time with a co2 art rig and I noticed that it’s gone into the red I understand the co2 is running low but how low should i let it run into the red before changing the bottle ?
Advice much appreciated
What is the best position to place the Co2 drop checker in a planted tank? I have read from two reliable sources with vast difference of opinion on this matter. I don’t wish to name them as I don’t want to point fingers but rather learn from their experience.
One (A) says to place...