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Okay. Thank you all for the guidance.

Okay thanks for explaining. I’ll work on the CYA now and finish SLAMing. Should I pay attention to pH or give it time to correct after SLAM and via aeration?

Then wouldn’t I be better off covering the pool? Also no sun today, maybe it still hits through clouds? It’s been raining on and off. I’m covering it when it pours but in between opening to offgas.

I’m not fully on board yet. Just tested again and FC is 4.5, CC is 0.5. It seems the FC is constantly dropping, I just keep adding more to bring it back up. And the CC hasn’t budged much from 0.5.

I’m not doubting your analysis but I’d like to understand how to determine that without an ammonia test. Also, can someone explain what having the cover open helps with? Is it just being able to off-gas?

Good information everybody. @ajw22 i just added 2 gal, left the cover off 30 min and am now at 7.2 FC and 0.2 CC. I added another 64oz per pool math and will check again in 30 min. Off to HD to buy a ton more chlorine! I’ve dumped over 30 gal so far this slam. Maybe I’m just not checking often...

Hi all, I’ve been a member for a short while now. My first dilemma was solved with my first SLAM. I now have a similar issue but it’s not working out so well thus far. Numbers first: FC: 2.2 CC: .5 pH: 7.2 TA: 120 CYA: 0 This started after my water turned very cloudy after some heavy rains. At...

I've been keeping it set at a constant temp but I did raise it from 85 to 90 the other night. It went from 85 to 90 steadily from 7pm until 3am, so about 1/2 degree per hour. My weather app says outdoor temp was down to -11 that night. We always have the cover on, even in summer. I'm sure it can...

Just got done with a good scrubbing. I tested and added more chlorine. The water is looking great and CC is below 0.5 but my FC is still very low (almost zero). Strangely the CYA is down to 15 and pH has dropped as well. I had expected pH to rise at least while slamming. I’m tempted to add some...

I bought a used Raypak 266 a few months ago. It's been heating our 17k gal pool during sub-freezing temp without problem. So far I'm impressed with it.

To be exact, I added 1.2gal at 4pm, tested at 8pm (.4FC/4.0CC). I added 1.75gal right after that test. Today I tested at 1pm (2.0FC/7.6CC). Added 2.4gal at 2pm. I'm off to buy more chlorine now and will test again when I get home, which should be about 3hrs since adding. I have the pump running...

Haha, nice! I'm following the chart, which is how I came to 16ppm FC. I guess I was just worried seeing only 2ppm after adding the recommended 3gal to get to 16ppm.

Okay, I've added another 3 gal and will go get more. I don't have an issue with the cost or having extra - I like having some on hand and will use it like you said. I was just concerned that I could be overdoing it - it's how I got in this mess in the first place by adding too much CaCL and...

Okay, so I should be adding another 2.5 gal? I bought 6 thinking it would get me through this but it's looking like I'll need more.

I started my SLAM last night finally (nothing like brushing during 8 degree weather!). I poured in 2.75gal of liquid chlorine last night to bring FC up to 16, per app suggestion. Just after starting SLAM, FC: 0.4, CC 4.0 I just tested the water today and FC is 2.0, CC 7.6 Does this seem right...

With some crazy wind all weekend and the cold snap I didn’t try draining or changing out filters. Today I did sneak out to do a water test (got the FAS-DPD test). Maybe I’m just really bad at testing because the numbers are not as expected. The new test was useless as it didn’t register any FC...

Okay last question for now I hope. If I go ahead and drain, does pulling from top or bottom make a bigger difference? Just pretending the guy at the pool store wasn’t completely wrong, is the surface or floor more likely to have the worst of what I want to pump out?

I ordered the FAS-DPD kit and also found a Taylor version on Amazon that will arrive tomorrow. So it looks like I can start this weekend as long as I find some good bleach. Thanks for all the input. I’ll update how it goes!

Shoot I did pick the one that had no fragrance or additives but it does have that “with Cloroxmax”. Any recommendations for local bleach? Leslies (online)has it but $70/4gal seemed a little steep. Oh and we are open right now. Crazy I know. But our pool is heated to 92. My wife insisted. We...

Thank you both for quick replies. I promise I have read all of the Pool School guides (prob 5x by now). I overthink things and work myself into a paralysis-by-analysis situation (hence the title). I just picked up some plain Clorox bleach (7.1%). I thought I could make due with the DPD...

Hello all, I apologize this might be long and rambling. I became a pool owner back in August 2020. The house we bought had an in-ground liner pool that appeared to be out of service for near 30 years. Found a pool guy to fix the substrate and install a new liner, coping, etc. I've been slowly...