Wow theres a lot of info there. ive got a neat setup, and im wondering if my filtration setup is adequate. ive got a 125G, with 3 Green terrors in it. For filtration, Im running two cannisters, and a 110 Aquaclear. My cannisters are, 1 rena Xp filstar 4, packed with 3 mech sponges, in 1 tray, bioSTARS, and ceramic rings in the one above it, 1 bioCHEMZORB pouch in the next, then finally active carbon. My second cannister is an eheim pro 3 ultra g 160, came loaded with media already, and its new to me. Its packed with two baskets eheim mech, and 2 baskets of substrate. then a white pad, and finally a blue pad. I have no idea how to clean or maintain this filter, or if the included substrate is all i need. I also have an aquaclear 110 hangiong on the back. any suggestions?