I have used Glacier water from various machines outside stores, which is RO
) and it usually comes out .003 TDS
, so at least in my area, its way better than tap, which is much higher. Based on what I've read here, it sure sounds like bad tap water.
Is there anything in the tank that might be leaking something (plastic decoration or anything like that)?
I don't know more than what I've read about stray voltage, but could that be it, as suggested earlier? Others could probably answer with some authority.
I've dealt with MV before (just getting my tank back in order after an MV battle) and while it is very deadly, I can't imagine it could kill a healthy fish overnight. My fish started acting strange and it took about two days to kill everything but my two Chromis. It works fast, just not that fast.
If its none of the above, then I like the idea of starting from scratch and using RODI
. Its no fun, but if it solves the problem, its worth it.