I am going to be moving my 36g stock into an empty 55g in the next month or so. I'd like to get it planted and get new lights for it first. I was previously running the tank with two whisper 40s. Will this be adequate filtration for a tropical community in a 55? I also have a magnum 350 the is dissasembled and needs some tubing. If I can figure out how to get it running, I could use that in place of one of the whispers. I would rather not do so because I have nowhere to hide it. Also, if I do go with the HOBs, could I add a large sponge filter? I've never used these before, so I'm not really familiar with them.