09-20-2012, 08:52 AM
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Plants, fish, Canister Filter, O2 Question
I currently have a 30gal FW tank set up with a canister filter turning over the water roughy 10 times an hour. The tank is clean and happy. I just switched over from a HOB filter. My question is this: Being that I no longer have the water agitation from the HOB filter, should I use airstones to airate the water? Additionally, I learned from some searches on this forum that if I'm using airstones to airate, I am also removing CO2 from the water. I have a lightly planted tank with fish having a ball swimming through. What is the proper compensation between bringing oxygen in to the water and still keeping enough CO2 in the water to give the plants something to thrive on?
Any help would be great, thanks!