Ive got a couple questions about my saltwater tank.Its a 55 gallon.It has about 15 to 20 pounds of live rock that was dead when i added it and it has a marineland canister filter and a protien skimmer.Should i remove the canister filter and just use the skimmer and rock.To get rid of nitrates im planning on adding some more live rock in about 2 weaks and im curing about 50 pounds of agrocrete.The other day my puffer turned like a blrown color and he puffed up but today hes got his color back and seems to be doing fine.

