I run a Filstar Rena XP4 as a chemical scrub that contains, 1 standard Chemi-Pure 1 pack Purigen and Fluval Phos-X (ferric oxide). I also have a CPR-BakPak2, 1 Koralia nano, 1 Koralia 1, titanium grounding probe. For lighting I use a Current SunDial 4x24 watt T5. No heater at the moment, tank stays