I have to ask (sorry to resurrect an old thread)....

I have a mesh safety cover on my vinyl IG pool. Closing it consists of shocking to high FC (15-20), adding PQ and letting it circ for 24 hours, then covering the pool.

Every year, I open and the water is clear but the bottom of the pool is a mess with algae. Granted it doesnt take long to get rid of it (a couple vacuum to waste sessions and its gone), but I was wondering if there is a way to avoid it.

The only thing I can think of is that the mesh is allowing too much sun thru. I wanted to open it earlier than normal this year but current projects forced me to open on Memorial Day weekend. Is my best solution just to open earlier next time?

Thanks!
-Chris