As for the plants, I am planning on using fishing line, but I like the idea of using net for the moss! And in addition to polys, I was thinking about a school of congo tetras! I plan on doing weekly water changes of 20%, so after a group of say 6 ropes, how many polys would y'all suggest. I've kept one of the palmas varieties (LFS was unsure about what kind and I never really bothered to find out), dels, and sens and I loved them all. I would definitely be up for keeping all of those again. I have 2 penn plax cascade 1500's on order, so I think my tank will be adequately filtered for a large group. Each filter is rated at 350 gph with media iirc.