adding CYA

[poolcrazed]

I want to re-cap a couple things. Your last FC test of 11 is not dangerously high. You do have some stabilizer in the water, so it's fine. You're just close to SLAM level is all. It will fall quickly on it's own. To be sure about your FC testing, it should be like this:


As for the CYA, don't try to analyze what it might be below 30 (i.e. 16, 20, 25). It doesn't work that way in those tubes. If teh dot is still visible all the way to the top, it's less than 30 and you add more - just like we discussed above. If later in the year you add more and it appears to be 45, call it 50 when you go to the FC/CYA Levels.

I just tested the chlorine with last year's powder and it was 5.5 and 8 with this year's powder......I meticulously do this, being careful to draw water from way below and have a magnetic stirer. I suppose the reading could be off bc of the age of the powder. Well, at least it's not 11 anymore.... Maybe we could sneak in a swim by early evening (if chlorine drops a bit more) and then put in half the slurry afterwards (the pound in the sock is all dissolved now or mostly) and re-test tomorrow afternoon. (testing chlorine again in the morning to be sure it's still swimmable.) Does that sound good? Thanks for your continuing counsel. I spent so long getting rid of CYA... definitely didn't expect this at opening but it would make sense given how much water I had to add.

 

[Texas Splash]

You will have no problems swimming. Remember that as long as your FC level has not exceeded the FC "SLAM level" seen on the FC/CYA Levels for your current CYA you are fine. Your CYA may have been a bit low, but I suspect it's at least 20 or so. So as long as your FC is below 10 you can swim.

 

[poolcrazed]

You will have no problems swimming. Remember that as long as your FC level has not exceeded the FC "SLAM level" seen on the FC/CYA Levels for your current CYA you are fine. Your CYA may have been a bit low, but I suspect it's at least 20 or so. So as long as your FC is below 10 you can swim.

going in! so hot here today!!! Don't know how you manage those Texas temps.....by having a pool!!! thanks. My slurry is pretty much ready to go in. I'll do it after all the swimming is done!

 

[MITBeta]

just tested the chlorine with last year's powder and it was 5.5 and 8 with this year's powder.

How old are the R-0871 drops?

 

[Kathe]

Yeah, I can see it's not working very well. I am in the northeast and the temp is still way below 70. Also I see how a stocking rather than a sock would work better. I am reluctant to "massage" it much since even with a surgical glove I seemed to get a slight burn. What about the slurry technique? Can I put it in a pail with warm water and then slowly add it to the skimmer. My cya is very low (16) and I wouldn't be worried but I am getting conflicting readings on the chlorine level. I got new replacement test kit materials a couple weeks ago. My chlorine registered at 11 yesterday. Agway said 3.3 so I thought wow, with so low a cya, it goes down fast. So I added some chlorine last evening and now it's registering 12.5 but with a dip stick only looks like about 4. So I'm suspect about the test kit material at the moment. All my other readings were pretty much the same as Agway. So two problems to solve.
Can I make a slurry since my water is so cold? I need to add almost 4 pounds.
What about my chlorine discrepancy. I am a very careful tester so I do not think it's tester error.
Thanks.

I was always told never to add any chemicals to the skimmer.
My "naked" hands never get a burn when massaging the stocking. I don't massage it until it's been soaking for at least an hour. At that point, a lot is already dissolving and comes through the stocking as a "cloud" . Let it continue to soak another hour and repeat. Second massage should get it all out. I can't speak to dissolving in a bucket. Never tried it as this works so well. You also want to keep the CYA away from the liner, so that's why I aim the jet to force it out into the pool and have the board out into the pool about 18" or so. I usually start out adding 2 containers of CYA to start. You want to keep CYA between 30-40.
TFP suggests that you get a good test kit to test with. You will want your chlorine to be 7.5% of your CYA.

 

[poolcrazed]

Adding CYA:
To increase CYA via granular stabilizer, place the required amount as calculated by the Poolmath calculator into a white sock and place in the poolside skimmer basket. For those concerned about suction flow to the pump, suspending the sock near a return jet or from a floating device will also suffice. Best never to allow undissolved granules to rest directly against the pool surface. After about 20-30 minutes of soaking, squeeze the sock often to help it dissipate. Once dissolved, consider your CYA adjusted to that programmed (target) level. CYA test readings should show a rise in 24-48 hours, however some pools may experience a longer delay to fully register. Best to confirm final CYA in about 5-7 days before adding any more stabilizer/conditioner.

Hey there, still working on getting my CYA up. It's in the 25 range now and I have lots still soft but undissolved in my bucket soaking. I pour in whatever liquid there is, then wait for more to dissolve. I am not sure it will ever really all go into liquid form (and that's with even soaking it in hottish warm). I may have enough now with what I just added. But shall I ultimately add the "slurry" even if I can still see "particles" IF it still tests low in a few more days or will that clog the filter? Many thanks, again.

 

[poolcrazed]

How old are the R-0871 drops?

new this year. I used only the old powder (with new drops).