Result of experiment of whether to add Polyquat at closing.

Closed with Poly in fall 2005 and opened in Spring 2006 to clear water and clear bottom with CYA reading of 30. Believe it was 30-40 at close.

Closed in Fall 2006 without Poly. Opened in Spring 2007 with clear water, but a film of dead algae on the the bottom and a CYA reading of Zero.

Just wanted to post info for comparison by others. Maybe we can gather enough info to see if there is a correlation.