As you may have read, I'm moving from a pool company to managing my pool myself using the TFP method. Background thread on that process here: Moving from PoolCo to DIY
I'm about three weeks into doing it myself, and getting a feel for how my pool moves. The pool failed an OCLT last night.
My current question: Do I SLAM now or do I wait?
Background: CYA is 160 so I have been targeting FC = 20 using LC 10%.
It *seemed* like I was having to add a lot of LC (1 gal a day, sometimes 2 gal a day). This seemed particularly high given that the safety cover stays closed most all of the time (and I assume that no UV is getting through the cover).
So I did an OCLT. Measured FC last night after dark at 2200 and then measured it again this morning at 0730 when foggy before any light on the pool. I’d lost exactly 2.0 ppm FC. No sunlight loss because it was night, and on top of that the cover was closed. CC = 0.
So there is a biological load that is consuming that FC (2.0 ppm in 9.5 hours); organic matter or algae or something else. I just don’t see it anywhere: water is crystal clear; no cloudiness when I brush the walls; nothing stirs up when the sweep runs; steps are clear; no ladder or water features for algae to hide in. Maybe there's something behind the lights in the niches?
We are supposed to get an inch of rain this weekend and I’m going to drain an inch from the pool before the rain and use that rain to dilute CYA.
So, I was thinking I'm not going to SLAM the pool now, b/c it will just get diluted.
Thoughts?
I'm about three weeks into doing it myself, and getting a feel for how my pool moves. The pool failed an OCLT last night.
My current question: Do I SLAM now or do I wait?
Background: CYA is 160 so I have been targeting FC = 20 using LC 10%.
It *seemed* like I was having to add a lot of LC (1 gal a day, sometimes 2 gal a day). This seemed particularly high given that the safety cover stays closed most all of the time (and I assume that no UV is getting through the cover).
So I did an OCLT. Measured FC last night after dark at 2200 and then measured it again this morning at 0730 when foggy before any light on the pool. I’d lost exactly 2.0 ppm FC. No sunlight loss because it was night, and on top of that the cover was closed. CC = 0.
So there is a biological load that is consuming that FC (2.0 ppm in 9.5 hours); organic matter or algae or something else. I just don’t see it anywhere: water is crystal clear; no cloudiness when I brush the walls; nothing stirs up when the sweep runs; steps are clear; no ladder or water features for algae to hide in. Maybe there's something behind the lights in the niches?
We are supposed to get an inch of rain this weekend and I’m going to drain an inch from the pool before the rain and use that rain to dilute CYA.
So, I was thinking I'm not going to SLAM the pool now, b/c it will just get diluted.
Thoughts?