As you kow I'm in the process of the metals issue as well...(actually I'm still waiting to see if the Metal Free will do anything)....

I DID toss 12 oz. of Poly60 into the water not 15 minutes ago (FC was near 0 and temps are forecast in the upper 90's today)..

IF ANYTHING NEGATIVE happens from adding the Poly, I'll post it immediately !!

(When the water turned on you (due to metal fall out) did the water cloud as well) ??

I'll keep you informed

S