I have a penguin 350 hangon filter, they say good for 75g, just keeping the water circulating on my 75 with 1 fish. The filter details are somewhat:350gph, has 2 biowheels per filter and carbon/ammonia inserts. My question is: if I run 2 of these filters on my 75...do you think I could get away with having about 10 3" dats in there comfortably for a month or so until I put my wet/dry on? BTW the tank and gravel and first filter is well established for a long period of time with all tank cond good.