Hi, I have a 75 gallon freshwater tank that is at 81 degrees farenhiet and has a PH of 7.2 (can be adjusted if neccesary). My question is to have a large community with approximatley two pairs of german Blue Rams, 2 dwarf powder blue gouramis, maybe 2 schools of larger tetras such as black skirts, and around 5 platys (any color). So, I was wondering as to what bottom feeders if any I should get, If silver dollars could fit in, and if this tank is possible and how many of each fish I should keep? The tank is fully decorated and has been running since late November and kept to baby Oscars in it for a month that did very well and then i gave them back to the store so I could start my community tank (it is empty now). Your advice would be appreciated.