Hey Dan i checked out ur tank realllly niccee work, the filters i have are a Emperor 400, aquaclear 500, emperor 280, two rio 1100 power heads with sponge filter attachments, two aquaclear 70 powerheads, one with a sponge filter and one with a quick filter. I have the powerheads to keep movement and flow throughout the tank and with all of the rocks i have its easier to clean them with heavy flow in my tank.