Help with neighbor's pool

[minisoda]

I finally have our pool levels good! I'm helping a neighbor who is dealing with some issues and can't seem to maintain chlorine levels in the saltwater pool.

I originally walked them through the SLAM process, but after testing the water I think high TA may be the culprit.

FC 0
TC 0
pH 7.4
TA 220
CYA 30

They're not very handy and probably won't want to rig up a system to aerate the water. Is the only other solution partial replacement?

Thanks!

 

[Texas Splash]

TA is not the problem. The lack of free chlorine is definitely a problem and will only get worse by the hour. They need to add liquid chlorine ASAP. Either increase the FC to 12 for a SLAM Process, or add enough to get the FC up to about 5-7 right away then perform an Overnight Chlorine Loss Test.

Ensure there is no algae first, then we can help you (or them) lower the TA.

 

[Mdragger88]

High ta has nothing to do with the lack of fc.
Have they completed the SLAM Process fully passing all 3 end of slam criteria?
Like @Texas Splash said they need to add liquid chlorine asap & do an oclt. If it fails u must continue slam. If it passes & the water is clear a higher cya (60-80ppm) should help the swg maintain fc better.
Be sure to increase target fc according to the newly tested cya FC/CYA Levels
Keep in mind a swg isn’t designed to overcome an algae issue or bring fc to target levels from zero.

Ta is last on the list of things to worry about.

 

[minisoda]

Awesome, thanks for the quick replies. Will help them commence with a SLAM!