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My CH numbers have been a little low, around 200 in my vinyl pool. I know that CH isn't as important in vinyl environments where (high ppm) scaling or (low ppm) erosion aren't big concerns, but what I have learned is that CH is VERY important to water stability and saturation in ALL pools. The...

I copied the link to my thread on the "Let's See Your Test Kit" thread. Thanks for the re-direct!

Let's see if we can post a link to another TFP thread that I started a few days ago https://www.troublefreepool.com/threads/test-kit-container-solution.185818/#post-1638633

Hey Guys, Hoping this will help some of you. Photos attached. I used a Taylor K-2006 kit for years. When I started buying refills from TFTest kits, the bottles were a different size, and wouldn't fit in the Taylor kit box. Then I bought a speed-stir. Then I had test strip bottles. Pretty soon...

FINAL UPDATE: The owner at DSP called to say that my unit could not be repaired. He offered to let me keep his loaner without charge, since I'd had such bad luck with the units. He did say that they changed manufacturers of the cells due to some potential quality issues a couple of years ago...

UPDATE: To answer the inline chlorinator question, it is RARELY used, and was inline when I converted to salt and is DOWNLINE of the SWG cell. I left it there as a chlorine backup, if I needed it, and is handy for adding things like CYA (a stocking). Trust me, this is not a factor. SWG Cell...

It is downline of the salt cell.

Water Geeks, I bought a Circupool RJ 45 for my pool in 2012. I was swayed by the price, the (then) reviews, and the 7 year warranty. The 45 is designed to handle a 45,000 gallon pool, mine is 26k. Also, my pool is only open from May through Sept. My thinking was that buying an oversized...

I am not a newbie. I have had this pool for over 20 years. I have a good grasp of water chemistry. I have upgraded equipment in the last few years, and have improved the technology. After a longer than normal SLAM, due to a late pool opening, I finally have the pool water clean, perfect, and...

Thanks, Mods. I've added more bleach to get over the shock minimum, and will do so until I pass the OCLT. I'll spray out the cartridges tonight to assist filtration. Today is the first day I've had 0 CC, so I feel I'm getting close. Sandrat

I think I'm almost there, but I'm not quite sure. I started very green. I bet I've put in 40 or more gallons of bleach since opening. Pool water is now blue, but opaque. I can't quite see the bottom of the shallow end (3.5 ft), but I think my cartridge filters are nearing end of life, and/or...

I am adding borates to my pool. All my local store had was 5 boxes of 20 mule team, so I decided to buy them and see how it tested afterwards (went from o borates to 15). After I added them, my CH, which was testing at about 250, now tests at 450. I've looked high and low in the forums and on...

My CYA is measuring about 30 PPM. I use a SWG, I want to get to 60-75. The last time I added Stabilizer, I way overshot it and had to drain down the pool to lower the reading. I've seen several methods to add stabilizer; sock in a basket, sock over a return jet, dissolve in a bucket and add...

I was surprised at the CYA drop also, as I had figured that a 1' water drop was less than 25% of the overall pool volume. I thought I'd go from 90 to say, 70 or so. But I have also found that an accurate measure of anything higher than, say 70 CYA is tricky, as it can be difficult to determine...

Yeah, I started with a CYA that tested to over 90, and I was afraid that it would inhibit the ability to shock. My SWG manufacturer recommends a range of 60 to 75. So I made my best guess as to how much pool water to dump, and, as I said, I overshot the mark a little. But yes, the 50 will help...

Update I drained the pool down about a foot to lower the CYA level and have refilled. I'm down to around 50 ppm this morning. I overshot a little for a SWG, but I can work within this zone for now. I decided last night after lowering and a partial refilling to go ahead and start the shock...

btw, I'm a he, (Mike). I was using the Pool Calculator.com I had seen that referenced here in other forums. It and the TF Pool Math page are nearly identical, but differ in the recommended shock value. I do note that the shock level on your Pool Math page matches your Chlorine/CYA chart. I'm...

Here's the thing: I haven't added any shock yet, as I'm waiting on some advice. But I was told that I needed an FAS test and to report the results back....a kit I need to order and wait on.... My original question was do I need to shock to the Pool Calculator level of 21? Or to the Chlorine/CYA...

Update: I did a diluted CYA test and found the "half" reading to be between 45 and 50, so total actual would be 90+ I won't have the FAS test kit for a couple of days. I noticed this morning that the water is looking a little "milky". No color tint, but not as crystal clear as it was a day ago...

Yes, Dry CYA. Sorry about that.

OK, will do the diluted test tonight after work, I would like to have a more accurate CYA reading. I will post the results. Maybe you can answer my general question about the difference between SLAMming the pool, and Breakpoint Chlorination. SLAM looks to be a long, multi-day, process, while BC...