I successfully SLAM'd the pool last week.
On night 1 of the SLAM, FC went from 14 to 3.5. On night 2, it went from 34 to 33.5, which was a success.
I left the SWG off for ~3 days in order to allow the FC to drop. Once it was ~8-14 (I can't remember exactly), I turned the SWG back on at 60%. Pump runs from 10am-4pm.
Checked water tonight and FC is down to 1.5-2. SWG is brand new - Hayward T Cell 15 for up to 45k gal pools (mine is 20k gallons).
Did a full water test tonight:
cya 55 (i'm not too confident in this #)
So I think my FC shouldn't be so low, right? Especially after it was 30+ a few days ago. I'm thinking either my T Cell isn't working - hard to believe as it's brand new and I'm not getting any errors. Or maybe my CYA is too low and I need to add stabilizer? We had torrential downpours in the past few days - not sure if that's relevant.
Is there a way to test if the T Cell is producing chlorine? I'm thinking I'll test FC after sundown, leave the pump on all night with the T Cell at 100% and then check again in the morning?
In the meantime, I'll take some water to the pool store to see if they measure a similarly low CYA and I'll pick up some stabilizer. And something to bring calcium hardness up.
Would very much appreciate any guidance. I just got the test kit recently and this if my first shot at trying to maintain the water properly on my own.
Thank you in advance.