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bderen · April 15th, 2009, 10:50 AM

I change about 20% every 6-8 weeks. Many will tell you to change about 10% every 2 weeks. It really depends on a lot of factors; Bio load mainly and whether you have an efficient skimmer and a fuge.

April 15th, 2009, 10:50 AM	#2
bderen Egg Join Date: Jul 2008 Location: Brooklyn, NY Posts: 44 Rep Power: 0	I change about 20% every 6-8 weeks. Many will tell you to change about 10% every 2 weeks. It really depends on a lot of factors; Bio load mainly and whether you have an efficient skimmer and a fuge.