Yeah, their tanks do get pretty bad sometimes. They don't have very much help with that section of the store. the owners are really nice, however, don't have very much good info to offer up. they offered to take care of my tanks while i was away for 2 weeks and charged me $10 per day wich was really good i thought. I came home though and both of my tanks had evaporated without being topped off to the halfway mark salinity was 1.037 in each tank, lucky my fish were alive, all the coral was dead. No real amonia spikes though. all the extra RO water i left around was not even touched, and pumps had run dry, and it really sucked. I don't even know if they ever even showed up. i went to get my key back, and haven't been back since.
Not completley sure, but i think they use tap water on their systems as well, don't quote me on that though.