Started putting sps in the tank mid December and ran a problem in late Jan due to my water being too clean. I'm dosing KNO3 once in while to keep nitrate at 2-5, pO4 stable at 0.02, Kh 8.1-8.4, Cal 450, Mag 1500. I have radions with wide angle lense at 40% atm and raising the intensity 5% per...