Hey guys, I just went to my local Petsmart today and returned my original filter I had purchased with my tank that I had recieved from Craigslist. The filter was a Penguin Bio-Wheel Powerfilter 200 Model. The reason why I returned the filter was because the Bio-Wheel itself would basically self destruct. The wheel would stop turning for example. Also, the filter was extremely loud whereas I could hardly sleep. (The aquarium is near my bed). SO after I returned the Penguin Filter I used my store credit and bought an Aqua Clear Powerfilter Model 50. I got home and set everything up just fine. The instructions were a bit vague but I eventually got it. The quality of the filter however is superb. I highly recommend this filter! The filter is so quiet I can now sleep at night! Also the filter is very customizable- allowing you to have 3 steps for your filtration. I just thought I'd should share my experience here because I feel very satisfied and pleased! Hopefully this helps with your filter decision making!