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I run two Intex units on my 6700 gallon pool, second season so far. In the peak of summer I ran them about 5 hours each and had no issues keeping up with FC demand. Right now I have one running 2 hours, and I alternate between them until they get put away for winter. I have a link in my...

Algae spores are microscopic, by the time you see green there are millions of them. I would guess that you have been fighting algae longer than you realize. Your SWG is already marginally sized for your pool when it’s “clean”, stress the water with a big pool party or algae and it’s never...

Is this the same cell from last year? You never replied to our previous questions. Do you have a FAS/DPD test kit? What size pool is your SWG rated for? SWG Recommendation

Are there electrical knock-outs in both enclosures? If yes, you can use “liquid-tight” conduit and connectors. This is a flexible water proof conduit system, also goes under the brand name “Seal-Tite”.

You have a chlorine pool that uses a SWG to create chlorine. While you should never have to regularly ‘shock’ any pool, it’s perfectly fine to add a bit of liquid chlorine (aka bleach) to establish your FC level, then dial in the SWG maintain FC.

This is incorrect. The copper plates have absolutely nothing to do with chlorine generation. All generation is done by the SWG cell. They are there to add copper to the water as an algaecide. As a matter of fact, I have removed mine and the SWG functions just fine. The last thing I want in...

I find that when using the K1766 that when I see the sample turn pink, if I wait a couple of seconds it will fade back to milky yellow, then the next drop will always go brick red, just about every time. That is my endpoint. I go slowly with the drops because of that flash to pink. This is...

How about posting a complete set of test results? FC CC pH TA CH CYA Did the pool pass all three criteria to end a SLAM? Or are you just randomly ‘shocking’ the pool? Regarding cal-hypo use, what is your current CH and CSI?

Are you attempting to SLAM? With a CYA of 80ppm, your FC should be maintained at 32ppm.

I highly doubt it is either, just wanted to know what we’re working with.

Hello Lori, welcome to the forum. I see you have a 35K gallon pool, do you know what size pool your SWG cell is rated for?

I backwash my sand filter into my yard, maybe 4 times a season. I've been doing this for my second season now, no damage to the lawn at all. I target 2800-3000ppm salt.

What test kit are you using? TC is somewhat misleading, what we need to know is the makeup of that TC, how much is FC and how much is CC?

No need for the check valve. Just have your SWG’s timer turn off 5 or 10 minutes before the pump shuts off, to clear the lines. Besides, there’s no high concentration of chlorine to be concerned with, as already stated.

Sure, you can use the cleaner. What is preventing you from ending the SLAM? CC greater than 0.5ppm? Can’t pass an OCLT? It sounds like the water is now clear.

Following this thread, you’ve been SLAMming for 7-8 days, how does the water look? What is your daily FC loss? How often are you testing and dosing during the day? Are you brushing daily?

I think I’ll call it the “OCGT”, or Overnight Chlorine Generation Test” LOL

Did you set your FC target with bleach first? A SWG is not designed to raise the FC from zero. Use bleach to get the pool to 6ppm, then run the SWG to maintain the FC. You’re SWG is almost 2X the size of the pool, it should be able to maintain FC.

Your SWG was off for the entire OCLT? Your FC is too low for your CYA. Your daily target should be 6-8ppm, and never let it go below 4ppm. If you don’t have algae now, you will soon if you keep the pool at FC 3ppm. You really should have bumped it up with bleach last night when you saw that the...

Can the pool pass an ?

All chlorine pools have salt in them, added from chlorine, muriatic acid & body sweat. pH (and not rubbing your eyes ‘dry’) is the key to eye comfort.

Use bleach to get to your initial FC target, then use the SWG to maintain FC.

If your pool’s FC is low, manually add some bleach to maintain it.

Good to hear. My pair ran great all last season, I expect the same this season. See the link in my signature.

Please re-read the process. It does not say anything about adjusting your CYA, SWG or not. It tells you that the shock level is based on your CYA. In the Details section it states:

Both those charts have the exact same SLAM shock level per CYA level. Shock FC level for a SLAM is always 40% of CYA. For a CYA of 60ppm, SLAM shock FC level is 24ppm on both charts. What am I missing?

There is no difference in the SLAM between a SWG pool and a manually dosed pool.

Re: SWG - Adding Stabilizer but CYA still under 20ppm 6lbs of CYA in your 35000 gallon pool would add about 20ppm to CYA. Did you put the CYA into socks first so it could freely dissolve, or did you just dump it into your skimmer?

I open to a clear pool every year. Do you follow the TFP closing recommendations? I drain down a bit at closing, so my CYA is usually around 40ppm when I open and top off in the spring (salt gets diluted too). I opened to a FC of 12ppm this year, it was a cold winter. Crystal clear and passes...

Sorry to hear of your troubles. A few pictures would really help.