I have two quick questions... First off I tested my Phosphate levels today and they were between .5-1.0 ppm. I use RO/DI water and Instant Ocean salt and really dont feed too much.. What could be the cause of these phosphates and how much should I worry? Also I wanted to add more flow to my 115 gallon reef tank. I keep a clam, some softies, a few lps hard corals, brains, mushrooms, Gorgonian, etc. I have just a pipe hooked up to a pump now That is in the middle of the tank and flows toward the right wall. This is really not enough flow ( I don't know the specs on the pump, etc, I did not install or purchase it). But I was wondeing what kinda of a powerhead and pump if needed should I get? I was lookign at maxi-jets and others but didnt know the proper flow rate for my tank. Should one more powerhead suffice or is more reccomened? Any input would be greatly appreciated. Thanks!