I just a Salt System in my pool.
Background - Pool is green. In the opening phase.
Timeline is as follows:
Saturday - Added 6 lbs of 100% CYA because my CYA was very low
Sunday - Added 680 lbs of Salt
Monday - Shock and Brush
Tuesday Evening - Turned On Salt System For The First Time - 50% output. Replaced DE in Filter. Another Shock and Brush.
Wednesday Morning - Pool is still green. Water Not Flowing Because Filter Pressure High (expected). Bump Filter, all is good.
Wednesday Late Morning (shortly after) - White Film on top of pool
Wednesday Evening - White Film Is Gone. Pool is still green, Dead Algae Floating. Water Not Flowing Because Filter Pressure High (expected). Bump Filter, all is good. Scoop Off Dead Algae
Wednesday Evening, 15 Minutes Later - White Film Is Present.
What is this White Film? It literally appeared within 15 minutes of when I got the water flowing again. At first I thought maybe DE, but if you lean down and listen, it's sizzling like tiny bubbles/suds. I've never had it before, but then again I've never had a salt water system before. Although, I've also never added CYA before. Compupool reads 3900 ppm for the salt. Chlorine 1 ppm, PH 7.1. Any ideas?
**UPDATE** Just went out there again (so now 40 minutes after getting water flowing again) and the film is now thicker. Then I looked at the Salt Cell. The right side of it where the outlet is has a collection of suds. See the pic I attached. Although, granted, it is possible that it's just coming in from the skimmer and collecting there in the cell, rather than the cell just producing it.