New Redgranite Wisconsin Diving facility

[Vtach]

Just a thought but you might be interested in contacting some other dive quarry owners/operators to hear about some of the techniques used to maintain water quality. 






I have dove RG quarry since the 1991 and it has always varied year to year in clarity but this is the worst it has ever been.

Best of luck to you and your efforts.  I hope that you can turn it around!