Hello I have a 37gallon tank with a 7 Cichlids in it. I purchased a Aquarium Kit that came with a power filter. I recently purchased a canister style filter that is good for up to 70 gallon tanks. My questions are, 1) Is there a problem with over filtering my tank like this? 2) My tank has not completely finished cycling yet should I wait till it has cycled before changing the filter 3)How should I go about changing this while trying to keep as much benifical bacteria in the tank as possible. Any other advice is greatly apperciated. This is the place I go for all my fish keeping info and everyone here has been great. Thank you everyone.