Quote Originally Posted by FormerBromineUser View Post
.
Carl's got you. You are in great hands!!!

Just an aside and my apologies for side-tracking your current issue...

Next year, try opening earlier before your water temp gets above 60 degrees or so. I have watched my neighbor with a mesh cover open early: sparkling. Late: brown. No guarantees or expertise here, just an observation. And a thought.
Quote Originally Posted by Orion View Post
My pool closing guy also suggested switching to a solid cover. Just waiting for the time when the mesh is dead before spending the money.
Our pool came with a mesh safety cover. In order to avoid opening to a green pool I had to wait until late Nov to close, and had to open by beginning of March. What a pain.

After a few seasons of that, I decided to "convert" to a solid cover. Since the mesh cover was still in great shape and a new solid safety cover would be expensive, I just bought an inexpensive tarp style cover and placed that over the mesh cover. Since doing this (I think adding borates helped too), I can now close in early Oct and open in early May with no green pool. One season I couldn't open until June 8th and the pool was still clear!

Definitely get a proper test kit (the Taylor K2006 is the one recommended here) and perform a proper shock; keep FC at or a bit above shock level, appropriate for your CYA level according to the Best Guess Chart, until these three condition are met;

1. Pool is clear
2. CC is .5 or less
3. Overnight FC loss is 1ppm or less