Since no one else has asked what TDS stands for, they either all know it and I just don't. So tell me, what is TDS? I boiled off my empty tank of live rock full of Aiptasia, and now I need to lick the algae problem and move forward with the tank to whatever I decide it should be. Should it be Seahorses, or another reef tank....or seahorses & reef combined? Anyway, fill me in on the TDS Greg. TDS to me, was a place Dave used to be a Network Admin at for awhile, and I know they don't know a thing about algae! lol Thanks! ...Angel