What area are you getting lost in? I have a spreadsheet with sooo many entries on sumps/overflows/plumbing that my head spins, lol. I can probably try to answer your question though. I made this thread to get an idea for better media placement in FW setups since all the research I have done is geared more towards SW tanks and they tend to include a fuge and skimmer sections which I am not too interested in. I'm thinking more along the lines of poret foam, and a whole lot of ceramic rings and such. Trying to stay away from K1 just due to cost alone.