Anyone know anything about aquatech 5-15 power HOB? I bought it to put in my fry tank to replace the bad penguin filter, but it doesn't have bio balls or bio tubes or a bio wheel. it's got bio-fiber. How does bio-fiber rate? I thought I might dump some bio tubes left over from my canister filter in it in order to help it. What do you all think? can you see any problems with this plan? It was $10 at walmart, so as far as fish stuff prices go, it's pretty cheap, but as far as my fish budget ($50 every 2 weeks) it's pretty expensive. The Impatient part of me wants to go do it right now, but the sensible part says "wait to find out if it's worth it and take it back if it's not." I guess I'll test the water levels and let that make the decision.