I have a ai prime 16hd on my 3p gall peninsula tank. I have it at very high settings but there are sides of the peninsula that just arent getting good light( or I believe). Does anyone recommend any other lights? If you believe the ai prime is good enough then I will keep it, I was looking at a hydra but dont know if you can mount it sideways ( same direction as the mount). Any suggestions would be good, just want to know if I should switch the light and to what. The tank is slowly becoming a sps dominant tank.