09-10-2012, 09:30 PM
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How do I know if I need fertilizers for my planted tank?
I got the Oxygen Plus Biofilter 7 for my 50 gallon tank. But it doesn't come with an extended tube like I thought it would for some reason. Is this still a good sponge filter? In one of my other threads someone mentioned the extended tube that can make steam rather then bubbles. I"m wondering if I should exchange it for #4 which appears to have the extended tube that I assume makes the "steam"?
Last edited by aklick; 09-10-2012 at 09:35 PM..