I have an ac500 in the back with bio-max in it and rowaphos. Got a 10 gallon sump with 50 bio-balls (ahh the hated bio-balls), but for now it's useless since my return pump isn't efficient. Looking to buy a mag drive. So basically i have 40 pounds crushed coral, 12 pounds of coral rubbles, 78 pounds of base/live rock for bio filtration, skimmer, 5 powerheads..i guess that's it. Light is 40wx2 neons ( 1 pseudo actinics ) and a Giesemann Nova II metal halide HQI with a super blue 20000k spectrum