I'm getting a new Fluval 404 and am wondering if filling 2 of the 3 baskets with filter floss and nothing else is a good idea. I'm thinkng of doing this because mechanical and biological filtration are my top priorities and giving the floss a dunk in tank water once a month (or replacing it) is easier and cheaper than cleaning out other media. I already have two Emperor 400s on the tank, so it wouldn't be the only filter. Will I be seriously reducing deminishing my filter's abilities?