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No, this testing is accurate up to a FC of i believe 50.

Can you post a picture? Were you having any algae prior to SWG?

This is absolutely true, I just didnt want someone to read this and assume that adding CYA has no effect on other levels.

Just want to point out, the dry stabilizer will effect his pH as well

If you have trichlor or dichlor shock you can certainly use them to increase your FC while increasing CYA as well. However either way there is no need to interrupt the slam. Add CYA using the sock method while continuing to SLAM as usual

I can walk into a store right now and buy an iPhone 7 too, doesn't mean it isn't outdated. She wasn't implying that it is old, the implication is that with the advances in robotic cleaners, suction/pressure side cleaners that require a pump to run have become obsolete.

Is there any way to prevent algae from growing on the string that holds my thermometer? It only occurs right at/around the waterline.

I ask because 20 lbs of dichlor will add 60 ppm CYA to that pool. Add in continued tablet use and I find 40 PPM CYA to not be a believable number. If you’re keeping the pool at shock level per the cya, the algae will die. Period. Something isn’t adding up here, and in my opinion it’s the testing...

What kind of shock did you use?

How big is the pool?

I’m questioning the CYA test more than the FC test.

Also have you performed an

How are you testing?

As stated, you can add the missing tests for the time being, or replace the kit entirely with the TF 100 (my recommendation) the money you save following the TFP method will more than pay for the test kit.

This is what I was getting at as well. Kathy, perhaps consider taking your next chlorine sample from one of the areas where the algae forms in addition to the area where you usually draw your sample and see if there is a significant discrepancy.

What shape is your pool and how many returns do you have? Does the algae you are seeing consistently form in the same areas?

FC is essentially at the minimum required to keep your algae from getting any worse but won’t make a lot of headway to fight it. PH - as said before don’t trust that number unless you can replicate it with a drop test or calibrate the probe. TA: High but all that means is that your pH is going...

Sometimes you're the bug, sometimes you're the windshield. Sounds like today you might be the windshield.

Your CYA is 18? How are you testing? 18 is below the threshold of available testing accuracy. We recommend 30 PPM CYA for a because you want enough CYA to keep your FC from just straight burning off in the sun, but we need to make sure you’re getting accurate readings and have accounted for...

You don't want to raise your CYA until you complete a SLAM.

Re: Walmart "Pool Essentials 10% Chlorinating Liquid" - Anyone else not able to find This product will work splendidly for you.

While we want you to be able to clearly see the bottom of your pool so you can say you’ve got awesomely clear TFP water, no one would deny that, the true name of the game is safety. Drowning doesn’t look like someone splashing about like the movies make it seem. You must be able to CLEARLY see...

Re: Walmart "Pool Essentials 10% Chlorinating Liquid" - Anyone else not able to find This is what they replaced it with at my store back in late June when they quit carrying it. I’m like, :brickwall::brickwall: those tubs would take up a lot less shelf room if they were displayed...

Re: Walmart "Pool Essentials 10% Chlorinating Liquid" - Anyone else not able to find I had lost all hope in Walmart but after jstblush’s post, I decided to take a walk to the garden section while I was there today ordering a birthday cake for my son’s (pool) party this weekend. To my pleasant...

Re: Walmart "Pool Essentials 10% Chlorinating Liquid" - Anyone else not able to find In Washington? This gives me hope. I'll have to look again

Just to expand on what Kim said, a lot of us have a second set of cartridges for cleaning so we can just swap them out, start the pool back up, and then clean the dirty ones.

Can you post a current picture of the pool? One with the steps or a vacuum head in it for a clarity reference? And a picture of your equipment pad? Have you inspected your cartridges for any damage? Are you sure that you’re reassembling the filter correctly?

Veccster, the High FC causes artificially high pH reading as Marty stated. Do you have full test results? When is the last time you broke down your filter and cleaned the cartridges? What is your current filter pressure vs your clean filter pressure?

Get 30 PPM of CYA in there and away! CH is irrelevant in a vinyl pool. With a 7.5 pH TA isn't going to be an immediate concern either.

I would run your pump on high veccster, or at least speed 4. Will increase your electric bill a bit but you want to keep that water moving.