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That's a good idea, thanks. I ran into issues again today, and after seeing yet another attempt at 'brand x' tubing didn't work quite right, I checked the new valve, and saw it was not flowing. This led me to re-install the original (which I'd cleaned up after installing the second valve), and...

Just before going to bed last night I checked it again, saw the level was still too low. Since the lines did NOT appear to be full of bubbles, I decided to pull the injection valve and check to see if the Hanna could push solution through. It couldn't. I removed it and attached the spare, and...

Just shortened it (suction side) by about 3.5 ft a couple hours ago, gonna go back out to see it it helped. It was struggling to pump chlorine as I walked away. :( The cap on the tank is usually left loose, and further, the hole where the tubing exits is also not air-tight. It never sucks air...

Yeah, that's a possibility (a leak in suction) but my money is on what Hanna told me; the chlorine tends to outgas naturally. I just pulled these up while thinking about this, which educated me a bit further: What happens when chlorine water is exposed with sunlight?A) Light yellow colour...

I'll give that idea a shot. I installed it low to be sure that it could never free-flow (though I suppose that may be hard to be certain of anyway). But aren't you pumping acid, not chlorine? Does it out-gas the same way? Mine frequnently has bubbles that get into the suction line. Does...

Following up on this topic. I went ahead and bought the Hanna BL101 (link above in my previous post) toward the end of last year's swimming season. Since it was the end of the season, I just stored it until "next year" (this year). I also bought some of the other goodies I needed/wanted in...

This looks really cool - I know this is an old post, but I was glad to see it. I was searching for info on a very similar product they sell called the BL101 - same idea, but measures ORP (kind of a proxy indicator of Free Chlorine, but not exactly. Read Understanding ORP Measurements for...

Thanks for saying that! I was just thinking a while ago (based on the exchange earlier in this thread) that I tend to dose for mid-range, but I'm often seeing it dip below minimum. I wasn't too worried about it previously, but after reading the thread (some of, not the whole thread) about...

That's me - OCD! In the original case (first post, which I think you were referring to), I hadn't added Chlorine yet, I was testing to see how much I should add. Last time I'd added it was around 7am that morning (about 15 hours earlier, as I think it was 9:30 or 10pm as I was doing the tests...

Thanks for the replies, folks. I forgot to mention that my kit includes the Speed Stir, and I was using it (this is the only way I could consider doing it in the dark). @Texas Splash , my technique is as you described. I'm sure if we did it side by side, we'd note some subtle differences, but...

Hi, Broad context: I've recently switched to using liquid bleach from the Frog Pool Tender system. The Pool Tender is still installed, but I haven't had chlorine cartridges or tablets (via skimmer or modified Pool Tender cartridge) in the system for several day now (not quite a week, I think)...

Hi, Draining it won't lower your chemical levels, as the concentrations will be the same as you drain, but the re-fill with new water will dilute your levels. If you lower to 50%, and refill with water that has no CYA, your 135ppm should drop to 67.5ppm, so, still a bit high, but may be...

Ok, that's an interesting perspective too... I considered SWG when shopping, but decided against it because (based on minimal research) I got the sense that I may have to replace some pricy component periodically. Now, I realize I knew next to nothing on the topic, and what I've learned since...

That's some cool stuff - thanks for sharing!

Ha! Ok, that sounds a lot like the voice of experience :) I do like tinkering. I'm thinking now about building a liquid chlorine pump that could replace the pool frog in my plumbing. A flaw (in addition to those shared above) that I see in the pool tender is that it's adding chlorine whenever...

@reggie, @brian, Yep, what Brian said, and here's where I found that info: Extended Test Kit Directions Archives These are the "extended directions" you wish came with your TF-100 / TF-Pro kit. Heck, there's a QR code that came with mine that might take me there, but I haven't tried it out...

Ha! Yep, your self assessment sounds a lot like mine is likely to sound. I have a hunch that once I get some confidence in reading the colors, compared to something with a digital readout, I may just used the color block again. But, until I have that confidence and judgement... I just don't...

Oh, you can do that? I haven't tried that - I was kinda wondering about if adding some more might help. I'll give it a shot and see. Thanks! And thanks for the tip/lead on the Apera 60 - I'll check it out.

Hi, @Sunnydaze, I'm not confident in the pH accuracy at all. I very rarely use the test block and end up with a good color match. Usually it's like, "Hm.. It's orangish-reddish.... I think it's kinda like the 7.2, but... it may be lower or higher. Definitely not the 6.8. Is it 7.5? Not...

Ok, thanks for that info - I'll see what I find. A few hours ago, pH was back up to 7.5, TA indicated 225 using the 10ml variant of the TA test. I let the pool idle for a few hours, in case anyone wanted to swim while it was at a 'normal' range. Now that the kiddos are settling in, I've...

Thanks for the welcome, folks. Thanks for the tip on the Frog, Marty - didn't realize it would bump up the CYA. I did put a bit of effort into raising my CYA intentionally, but I'll watch the level and switch to something else (for chlorine) if the CYA creeps up. I read here that liquid...

Hi, A lot in that subject, but it's really one question to start with. Again, new pool (about a month old), filled with well water (well, that ship has sailed - knowing what I know now, I don't know that I'd do that again...) Went from using test strips (Frog brand, came with my Pool Tender)...

Hi folks, Just making a quick intro before I ask a question. Joined up yesterday after doing a fair bit of reading on this site over the last few weeks. I'm a new pool owner (Above ground, round, about 20,000 gallons). Just opened it up about a month ago, May 21st, 2022 was the first day it...