Good day all. So Ive been around the pool and tub forums a little over a year.. Had my ups and downs.
early on I had a similar hot tub issue with chlorine just going away FAST.
Ive learned
1. Make sure SWG is operational and salt level adequate.
2. CYA - without CYA chlorine goes hyper fast
3. PH - a pH over 8 and it goes fast too.
However, right now, NONE of these are the case. CYA is 50+ PH is 7.5 and Salt is 3k, right where ive always kept it. Even if the swg isnt working, there is NO WAY i should be using this much chlorine.
For instance... I found my 12.5% to be 1/3 as useful, because its about 8 months old.. ok, so 3x the amount.. fine.
My tub had about 1-1.5 FC last night before bed. I put in 12 oz of 12.5% chlorine (remember its only 1/3 as useful) Just tested it now (12 hours later or so) and its at 2FC.
If I add another 12 oz, by tomorrow, its down to 1-2 again.
Just no idea why this is happening. Could there be that much bacteria in there? Ive never let this water change hit 0 FC at all.
Just puzzling to say the least.
early on I had a similar hot tub issue with chlorine just going away FAST.
Ive learned
1. Make sure SWG is operational and salt level adequate.
2. CYA - without CYA chlorine goes hyper fast
3. PH - a pH over 8 and it goes fast too.
However, right now, NONE of these are the case. CYA is 50+ PH is 7.5 and Salt is 3k, right where ive always kept it. Even if the swg isnt working, there is NO WAY i should be using this much chlorine.
For instance... I found my 12.5% to be 1/3 as useful, because its about 8 months old.. ok, so 3x the amount.. fine.
My tub had about 1-1.5 FC last night before bed. I put in 12 oz of 12.5% chlorine (remember its only 1/3 as useful) Just tested it now (12 hours later or so) and its at 2FC.
If I add another 12 oz, by tomorrow, its down to 1-2 again.
Just no idea why this is happening. Could there be that much bacteria in there? Ive never let this water change hit 0 FC at all.
Just puzzling to say the least.