Recent content by Sampo

That’s your chlorine doing its job. What’s your FC? If it’s in range you’re fine.

What website are you using to track weather that far out??

Great points @Newdude ! Maybe I'll direct some of my off-season pool-fever next winter to tracking the temps more methodically, with a wireless thermometer or something. But I like your plan -- and I'm counting down the days to the latter part of this month when I plan to open! Hooray!

For sure! Good to see you my TFP friend! We made it through the winter! I've read this before -- but I assume this must be true only for the "baseline" of an uncovered pool? It doesn't feel to have been correct for my covered pool this frigid January (though admittedly I don't have detailed...

I've been wondering about the insulation and warming properties of my pool cover. The combination of the solid safety cover and the underlying air-gap clearly provides significant insulation in the winter: on occasional checks, my water seems to have maintained a temp of around 40-44F despite...

Hi @JamesW -- This is great stuff! Your well-sourced replies are much appreciated. I don't doubt that the Chlorophenol Red driven mechanism of interference might have happened in some of the prior threads that you've cited. And I also don't disagree that it could be a secondary contributor in my...

Thank you! It's been 20+ years since my organic chemistry classes, but I think I can still roughly follow the outline of this thoughtful explanation. I think the bottom line for me is that the Polyquat is getting chopped into pieces far faster than I expected -- and despite the manufacturer's...

Wow! Super cool to get a response from another TFP legend. While I have your expertise, can I ask a follow-up, @JoyfulNoise ? Why would the Polyquat interference/artifact disappear after a few days? As others have pointed out, the Polyquat doesn't degrade very fast. So I'd imagine the Polyquat...

I know this thread is inactive, but I've got some interesting follow-up that I'd like to share in case others see this discussion in the future: We had some unexpectedly warm weather after I had covered my pool -- so I've kept my pump running much longer than I had originally planned. Thus...

Great! Thank you so much @PoolStored and @ajw22 -- I really appreciate your help!

Also since there is talk about chlorine oxidizing the polyquat chains into shorter strands, I was academically curious to see if the FC dropped after the Polyquat addition (it didn't -- although the CC became slightly pinker, but still <=0.5).

Interesting. It just feels so antithetical to everything that I've learned about TFP methods: we check a starting level using a reliable test, then add chemicals with intention, and finally recheck levels to be sure that the addition had the expected effect. That is, I'm so used to checking...

Hi TFP friends! I need some help. For background, I'm in the process of closing for the first time by myself 🥳. My chemistry had been balanced and very predictable for months (thanks to TFP). After doing a "soft close" on Saturday (solid cover on, but pump still running), I'd passed my OCLT...

Challenge accepted.