IceShadow
Gold Supporter
Can't get Chlorine to hold
- Thread starter ScubaDoo
- Start date
Would my CYA of 30 in a saltwater pool be a contributing factor? Or is it sufficient?
IceShadow
Gold Supporter
The saltwater is irrelevant until the SWG cell is active.
That said - you're not at standard levels, you're at SLAM levels. Burnoff will be higher at that higher level of FC than the standard 2-4ppm I mentioned earlier. (Brain fart, forgot that until now. Still new to all of this myself!) Hard to say if it's standard or not, but if you don't see any more of that dead algae tomorrow and you have no CCs, water still clear and no loss overnight, then you should be good to end the SLAM.
That said - you're not at standard levels, you're at SLAM levels. Burnoff will be higher at that higher level of FC than the standard 2-4ppm I mentioned earlier. (Brain fart, forgot that until now. Still new to all of this myself!) Hard to say if it's standard or not, but if you don't see any more of that dead algae tomorrow and you have no CCs, water still clear and no loss overnight, then you should be good to end the SLAM.
Updates:
630 FC 11.5 (add 1/2 L chlorine)
815 FC 12.5, CC 0.0 (no add!!
)
Note: sun is off pool around 630
Questions:
The stains are getting bad... Can I add anything at this point? Would "Stain & Scale" be OK? I'd hate for them not to come out after. Starting to see new tiny rust stains and what looks like sea salt in the skimmer sock.
630 FC 11.5 (add 1/2 L chlorine)
815 FC 12.5, CC 0.0 (no add!!
)Note: sun is off pool around 630
Questions:
The stains are getting bad... Can I add anything at this point? Would "Stain & Scale" be OK? I'd hate for them not to come out after. Starting to see new tiny rust stains and what looks like sea salt in the skimmer sock.
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Good morning, updates:
Tested at sundown last night:
845: FC 12.0
Then midnight: FC: 11
Then 6am: FC 11, CC 0.0
Now at 9am: FC 10
Water is very clear, and saw just a tiny amount of grey dirt/algae on pool stairs. After touching it, some of it was gritty like sand (was sand) and other was very like dust that washed away.
What do you guys think? Good to let it drop now?
Tested at sundown last night:
845: FC 12.0
Then midnight: FC: 11
Then 6am: FC 11, CC 0.0
Now at 9am: FC 10
Water is very clear, and saw just a tiny amount of grey dirt/algae on pool stairs. After touching it, some of it was gritty like sand (was sand) and other was very like dust that washed away.
What do you guys think? Good to let it drop now?
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Should I try to keep it at 12 FC if I want to do one more OLCT? Or let it drop to like 6 FC as my low CYA (30) makes it tough to hold on a sunny day like today.
You an go with one more night. That's what I would do if it would be my pool. I would let the experts chime in if it would make sense to raise your Cya some as the sun exposure is alot.
You are in Canada? Canada does not have the sun angle Texas does. Keep your CYA at 30 until you are sure you are done with algae.
That's what I wasn't sure about but I can't agree more not raise it till all algae is gone because cya can make your life more difficult at times. Good luck.
After drop of 1 FC overnight, no CC and clear water (see above for results), does it sound like the algae is finished off? Should I let the FC drop to normal ranges (FC 6)? And then run a OLCT tonight at FC 6?
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Was referring to earlier "
I tried more (5L bottle) to try to kick start it. Did a test 5 hr later and chlorine was very high (off chart of tester 10+) and PH (8.2) was now as well. Before bed last night put in some dry acid to bring down PH and planned to let sun burn off some chlorine in the sun the next day. Woke up, tested and FC was back to 0.0 and PH was 7.2."
I tried more (5L bottle) to try to kick start it. Did a test 5 hr later and chlorine was very high (off chart of tester 10+) and PH (8.2) was now as well. Before bed last night put in some dry acid to bring down PH and planned to let sun burn off some chlorine in the sun the next day. Woke up, tested and FC was back to 0.0 and PH was 7.2."
Side question: Will the smell of chlorine leave the pool after I let the FC drop to lower levels? My arm smells of chlorine after every test.
