Good morning! Coffee in hand, the sun is shining, and we're slowly stepping away from the ledge (thanks to great advice from the group here).
Yesterday, we held our FC at 10 (our target is 7 based on our CYA) all day long while we did our cleaning/scrubbing activities. The pool wasn't chewing through chlorine, was crystal clear, and the kids and their friends swam all day.
We scrubbed all of the following... which all were visibly clean already... no algae hiding anywhere, but I got in there with a toothbrush just to be safe...
- toys and floats
- ladder
- ladder mat
- skimmer
- light / inlet (again, everything was clean as can be)
- walls
- floor
We backwashed.
We re-aimed the inlet eyeball to aim at a 45 degree angle towards the bottom of the pool. And we've left the filter running 24 hours.
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So, to recap... The reason we were nervous this 2nd time around is that we still saw sediment appearing on the bottom of our pool AND we had an overnight loss test (barely) fail (dropped 1.4 overnight a couple nights ago).
We re-ran the overnight loss test last night and didn't lose any FC's at all. CC was at .4. Water clear as can be. PH is 7.4. CYA is 50.
Perhaps the sediment on bottom of pool is something other than algae? And perhaps my wife just picked bad timing to miscount the drops while testing FC during the overnight loss test a couple nights ago? Seems like we're still in the clear after all. Yes?
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Lastly, we plan to continue to aim for FC maintenance level closer to 10 than to 7 to account for high volume of swimmers and full sun conditions. Sound about right?