Thanks brutus. I'd like to think that the Eheim 2215 alone can handle my tank and therefore totally eliminate the Penguin 330. By adding the 2215, there's quite a lot of turbulence in the aquarium. I think the fish might prefer a few more dead spots to relax in... lol. However, additional filtration can never hurt I suppose.
But this makes me wonder about another point. What's all this I keep seeing recently in forums about virtually eliminating the use of carbon? I also use Chemi-Pure and thought I could just fit it into my Eheim 2215 and stop using the carbon... but can I also stop using the Chemi-Pure and stick solely with the "provided" media that came with the Eheim (it came with a carbon pad, but states that I should remove it in two weeks)?