First time pool owner - pool hasn't been clear all season

[safount]

Re: First time pool owner - pool hasn't been clear all seaso

Day 16:

OCLT result: Loss of 2 ppm FC
CYA is 40; Continuing SLAM process. Recommended shock FC with CYA of 40 is 16 ppm; restoring FC to 20 after each test.

Test #1
FC: 18
CC: 0

Test #2
FC: 13.5
CC: 0

Test #3
FC: 13.5
CC: 0

When I do pass the OCLT, the Chlorine/CYA chart indicates that with a CYA level of 40, the pool should be kept at 3-5 ppm of FC for swimming. I seem to be losing a lot of FC during the day, so is it normal to pour enough bleach in the pool at dusk or in the early morning on a daily basis to raise FC to about 10-12 to keep the FC above 3 during the day? What should I be aiming for?

 

[techguy]

Re: First time pool owner - pool hasn't been clear all seaso

Do you have a light in the wall? Have you cleaned behind it?

Losing FC during the day is normal (due to the sun) but are you losing 2FC each night? You are pretty blue to have much living algae in the main body of the pool.

 

[linen]

Re: First time pool owner - pool hasn't been clear all seaso

When I do pass the OCLT, the Chlorine/CYA chart indicates that with a CYA level of 40, the pool should be kept at 3-5 ppm of FC for swimming. I seem to be losing a lot of FC during the day, so is it normal to pour enough bleach in the pool at dusk or in the early morning on a daily basis to raise FC to about 10-12 to keep the FC above 3 during the day? What should I be aiming for?

You will lose a lot less FC once you have finished off the organics and you let your FC come down to normal levels. FC loss to the sun is a percentage. Typically (though there is no such thing as a typical pool) you might loose ~55% of your chlorine per day when your cya is 40 ppm. So to stay above 3 ppm you would want to dose to 3/(1-0.55)=6.7 ppm FC (so 7 ppm might be a good target, or 8 to keep safe). Now if you move your cya up to 50 ppm which requires keeping FC above 4 ppm, then you may only loose 40%/day...so 4/(1-0.4)=6.7 ppm FC (so again 7 ppm might be a good target or 8 to be safe). Again, keep in mind that each pool will be different. See: http://www.troublefreepool.com/phosphates-and-sudden-chlorine-drop-t49199-20.html#p408263

 

[safount]

Re: First time pool owner - pool hasn't been clear all seaso

Progress update: Finally passed OCLT on Day 25.
Started the SLAM process on July 14th.
Pool was good to go on August 8th.

Thanks everyone for the help! :-D

 

[linen]

Re: First time pool owner - pool hasn't been clear all seaso

 

[FamilyGuy]

Re: First time pool owner - pool hasn't been clear all seaso

Glad to see the puck floater sidelined