Trolling for some ideas here... Since the zeo issues I had, i've been unable to keep most corals thriving, much less living. I'm a little perplexed as to why at this point. It has been almost a year (I think) since it started going bad and i'd have expected a turn around. The losses include all my SPS, acans, most zoas and even some of the hardy LPS like hammer corals. the only things thriving are some mushrooms, a couple of leathers and some assorted softies. i've also tried some new frags into the system and those haven't done well either. -I've been doing regular water changes the whole time. I've tested the new salt water and it is ok. i've also used different salt batches and do regular maintenance on my RODI system. -My tank water tests out fine. -I've got good water movement and good lighting. -No pests that i've found. -I don't believe i've had any environmental contamination. I've been keeping tanks a long, long time and know how to avoid that. the wife has been well school in this too. -I don't think i've got any leaky voltage issues. I read low values with a volt meter, but I believe it is induced voltage, not leakage. -No leaky pumps or anything like that as far as I can tell. Any ideas out there?