So, after lots of reading from the threads, I have re set my 75g. I am now running a Marineland Emperor 400, a Marineland penguin 200 for filters. A 160gph power head, and 300w heater. I haven't gotten into live plants yet. I have a common pleco, 3 dalmation mollies, 4 platys, 1 Cory cat, 1...