How do I know if I need fertilizers for my planted tank?
Also:
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"?
Also:
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"?