pickin your brain

I think you are thinking of dKH of 9 to 13.

 

Any other recent additions to the tank, such as fish, inverts, or new coral?
I would also run some carbon in your tank for a bit if you haven't already. Never know if there may be some toxins killing your fish, and if your fish are dying because of toxins, It likely won't take long for your corals to follow suit.

 

well i think i found the problem i went to lfs and talked to them and the owner said he had the same problem on a tank they mantain at a doc office it turned out there was a short to ground in the water so he gave me a tester to borrow and i did have current goin throught my water but not enuff to feel it when i stuck my hand in there i unplugged my little pump to my refugium and it whent to zero so i went back and got another pump (warranty) and i also got a ground probe so if it happens again it wont effect the water

 

Chalk another one up to the absolute necessity of a ground probe! Glad you found it, too bad it couldn't have been sooner! Karma for the losses, and for the knowledge gained!