Hi there this is my first post here on these boards. Hello all! I have a 29gal tank. 2lbs of LR about 15lbs of base rock, 1 inch layer of "live sand." I'm running the Fluval 305 pump and heater. I have 4 Damsels in my tank. 1 Sgt, 1 Yellow tail, 1 3 striped, and a Chromis. The tank has been up...