I changed over to the Fluval when my Marineland dual bio-wheel died about 6 months ago. I am super unhappy with this power filter and need a solution. I clean the tank weekly and vacuum weekly as well. I have 5 Juli, 4 Cherry Barb, 4 black skirts and 5 coral shrimp in the 29 gallon tank. I don't feel like this filter actually filters the water. When I stir up the tank the stuff that doesn't get in the vacuum tube, floats around and settles on everything. I never had that with the bio-wheel. What can I do to actually get this stuff to filter out? Do I need another filter solution. The sales guy talked me into the Fluval when I thought I wanted to move to a canister. I find that I have to vacuum after about 1 hour to get the bits up again. Super frustrated!