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Note the last time I added chlorine... Yesterday, tested FC@ 13 at 8:20 PM. Then retested this morning at 7am. And it showed a loss. Overnight.

I put above 10 to see if maybe there was an ammonia problem that could be cleared. My tests above were my OCLT and they showed that FC was dropping overnight. Plus, 8 gallons to get above 10ppm suggests something is strange. It should have taken 2 1/2 gallons.

A few days ago, I was getting >0 CC readings and was trying to figure out what to do. So I took a step back, got my other numbers in order, and let the pool sit for a day. Did nothing. So here's what I did yesterday. Water is crystal clear, BTW. And CCs went to zero went I let it go. (I...

Sorry. I meant Sodium Bisulfate. New FAS/DPD test just now. Using exactly 1 heaping scoop and stirring/dropping fairly quickly. FC - 3 CC - 11 Added 2 gallons of 12% chlorine that I bought last year, so likely reduced in potency. Will check again in 30.

Nothing other than the chems to raise CYA up to 50 and lower TA (sodium bic...)

When I do that, I get CC results over 10 and very lower FC numbers, which seem unreasonable is a spotless pool. Another interesting note... I followed up with an OTO chlorine test. After adding the yellow drops, and shaking a bit, it gave me a reading of about 3. I list it sit another...

I just got a batch of new chemicals. Trying to SLAM my pool. (CYA of 50, PH ~7.2, TA 150-160) I woke up this morning and tested and saw that I was not at my target FC of 20. So added liquid chlorine and then tested 1 hour later. 4 test results: FC of 15, CC of 1 FC of 12, CC of 4 FC of 5...

Afternoon update. I had put a full gallon of 12% in this morning. At the FC is even lower than it was this morning. Current reading was ~4.5 for FC and a CC of 7 or 8. I'm going the wrong direction. So I decided to SLAM the pool again, and try to keep FC at 20 to the CC drops...

Yes - CYA is staying at 50. My TA is too high at 200 because the pool opening company overdid it. I've been trying to drop it, but only started that yesterday. PH is around 7.4 as of this morning. I had a few people swim in it the other day, but not for too long. That been it so far this...

I wish I could jump ahead one week to test/treat the pool without the added variable of all the pollen/tree floaters, etc. If a bit a swimmer sweat can raise CCs, I'd have to imagine this debris is NOT working in my favor.

I do not. I put the CYA at 50 to accommodate the all day sun exposure.

Does that mean I would need to SLAM again? Or would keeping FC in the right range eventually remove the CCs? It's certainly a possibility that my first OCLT wasn't done properly. After all, one of my chems was expired.

It was 12% liquid shock I bought at the pool store. Could there be algae up in the DE filter? I completed cleaned it out last week before I did the SLAM. So it'd have to be algae that was sucked up into a clean filter. When I look in the skimmer to clean out all the tree debris, it often has...

I was getting some low CC readings, despite having spotless water. So I SLAMed it a few days ago. Had my FC in the 20-25 range, and was able to make both the CC go to 0, and my overnight use of FC to be 0. So I let FC drop back down to the 4-8 range, where it should be for CYA of 50. But...

Well, got my new chemicals. But unlike a few days ago, when I didn't have ANY CC after slamming. Now I'm showing some again. THIS, despite the water being absolutely crystal clear. 8.5' looks like 3'. If swimmers and algae can cause CCs to form, wouldn't debris from trees also generate CCs...

Yes - I had all of that. FC stayed fixed over night, just about 20. Water crystal clear. And no CC.

That was just to SLAM it. 20 is the SLAM target. It's back down to single digits now.

I did it the other day, when the FC was at 25 and it was at 25 in the morning. I think I did it the next night too with same result, but I've done so many tests, I may have forgotten. I will try again. 50 CYA, by the way. (I have a new batch of test chemicals arriving shortly, so maybe I'll...

I shocked my pool a few days ago, and have been watching how much the FC drops during the day. My CCs are pretty much at zero now, so I'd think FC would drop during the day as a result of sun, but not quite as much as I'm seeing. Over the past few days, FC dropped 24 to 15. Then 15 to about...

OK - I think I got it. In the test I just posted above, it occurred to me that I wasn't adding enough of the powder into the liquid before I started the drops. (I read that 1 scoop is enough for low FC, but when FC is over 20, I realized I wasn't bonding all the chlorine with 1 scoop.) So I...

I tested the FC last night just before sun went down. It was around 20. Added another gallon of 12% chlorine. Measured first thing this morning, and the FC is at 10. With my outdated and yellow chemicals, it was still showing CC at 13. Water is spotless and odorless though. Does this sound...

not too much of either.

I had an old kit from 8-9 years ago. I replaced all the chemicals about a year or so ago, although I see 2019 expiration dates on some of them. They were stored in my sunroom. Either in the plastic case, or the plastic bag in which they were shipped.

Something is definitely not right. I just got readings of 21 FC and 11 CC. The other strange thing is that my OTO chlorine test only shows a Total Chlorine of 1. Wacky. I looked at the TFTTESTKIT website, and it said that the DPD reagent #3 needs to be clear. Mine is bright yellow. Even 1...

I was able to get my FC up into the mid-20s. And the CC was still quite high (13 or so - I get a different set of numbers every time I do it). Higher than it was when I didn't have enough FC in the pool. Will the CC's dissipate? Or am I making the issue worse?

OK - So I redid the test...quickly. It showed FC of about 2ppm, and CC of about 6ppm. (I didn't pay too much attention, once I realized it was going to be high.) I added 5 gallons of 12% chlorine, stirred it up, and tested about 10 mins later: FC of 10, and CC of 13+ (I was quite shocked...

Thanks. So is it possible I am not getting a FC reading of 6...because I'm letting it turn back to red before I add more drops? I'll try again, but from memory, it was at about the 4th drop where the color would turn clear quickly...but come back to red in about 15 secs. By comparison, the...

Hi - I'm a 10 year pool owner who has been quite successful using all the techniques I've learned here. I just moved to a new house with a different pool and have some questions on things I see that are a bit different. The new pool is ~29k gallons and currently has these specs: Water is...

I just did my daily bleaching. The chlorine dropped roughly 3 ppm in 24 hours (dropping from 6.5 to 3.5). But some of that was used to clean up from the 8 people that were in the pool just prior to yesterday's bleaching. SO - I raised it back up to 7 today. And I also put 5 tabs in the...

Hmmm - Not alot of time for that. I get 1 24hr period to try something out, and then I'll guess when I leave on Wednesday.