I've been struggling for a while with my pool but before I get to the details here are my current numbers:
(9,500 Pool, Saltwater)
Total Dissolved Solids: 4,900
We had a black algae breakout last year, we combated it our best by adding lots of bleach and brushing as much as possible.
This is our 3rd year since having the pool built but It's always seemed in the last two years I had to run my SWG at 100% to get any chlorine to show up. Mostly we would just offset it with bleach.
I did acid bath the SWG this weekend and it was packed tight with build up.
I've realized my pool had 0 CYA. Now, I'm not sure how often this should normally get added but I've added at least 7lbs every season for the past 3 years.
Friday I added 5.5lbs (using the sock method I found here. Totally awesome BTW) and it is now at 50.
The local pool store says my phosphate numbers are killing my chlorine, but from what I've read here I should be more worried about the CYA.
Is this correct or are my phosphate levels looking that bad?
Anyway my wife is anxious to fire up the pool heater but I still see specs of what appears to be black algae. I'm worried heating it this soon in the season will just allow it to grow like wild fire.
Is it time to SLAM, and what recommendations would you have?
PS: We have a massive pollen issue around our pool that is simply unavoidable this time of year. I suspect that's part of my phosphate issue.