Where to set SWG at

Jump to latest Follow Reply
Perfect. Kim, I ran to Lowes yesterday and got that exact stabilizer. Went to the PoolMath page and figured out how much I need to add. Ive got a sock, so now I just have to measure it, tie the sock off, and put it in the pool. I will target for 30 for now. I know Ill be impatient and want to check the levels quickly, but Ill wait a few days. At least the pool looks really good, so Im not panicking that Ill be judged!
 
What you need to add stabilizer.

Adding CYA Equipment

Adding CYA Equipment


Stabilizer in a sock

Sock filled with CYA ready to hang

Sock filled with CYA ready to hang


Sock suspended in front of a return

CYA dangling in sock in front of return

CYA dangling in sock in front of return


Every few hours you can squeeze the sock or shake it in the water to help it dissolve. CYA is a mild acid and I wear a rubber glove to squeeze the sock as it dries out my hand. If some undissolved stabilizer gets on the floor of the pool brush it around.

Keep your pump running while it is dissolving and for 24 hours after.
 
  • Love
Reactions: carnivalday
Cd,

We do the same thing as Jim R on the CYA sock. Works great! Important thing is also to squeeze it once or twice... usually dissolves in a couple days.

Hang in there, you're doing great! At first, it can seem overwhelming but you're already getting the hang of it. It's really only 3 parameters you keep between the curbs. PH and FC will be where you spend most of your time. CYA readings are much more stable. Once you get where you want to be it will stay there with minor adjustments monthly or less.

Happy Holidays to all!

Chris
 
  • Like
Reactions: carnivalday
Thanks, Chris, I do feel like Im sorta getting the hang of it. Im not having panic attacks like I was before. In fact, I just worked on a spreadsheet so I can keep track of all my numbers as I run them and what I add on what dates. Maybe a little ocd, but it will help keep me on the straight and narrow. I had to laugh at Allen's post with his pictures...he must have been looking over my shoulder! Except that instead of that twine, I took a string off of a bale of hay. I have a sock in my pool as we speak!
 
  • Like
Reactions: bobby2175
Just curious what’s your water temp? You may be wasting your time trying to figure this all out this time of the year. Here in HOUSTON my water temp is 54 deg today and the SWG is not on as it won’t work in this low of water temp. I would imagine in Florida you are probably experiencing similar water temps.
also I never really understood the whole put the CYA in a sock and let it sit in the skimmer for days to dissolve or put in front of a return valve and let dissolve for days. I Put it in a sock in the skimmer for a few hours then go out with a pair of gloves and squeeze it all out in 15 minutes. Done...
 
  • Like
Reactions: carnivalday
Marty, Im not an "app" person. I use my phone to call, text, take pictures, and thats about it. Im much happier having it on something that I can already understand and work with. Its just me.
 
Bvacchiano, my pool temp right now is 69. It hasnt gotten any lower than that this past month, tho I know the next 2 months we might get some cooler weather.
 

Enjoying this content?

Support TFP with a donation.

Give Support
If you're more of a PC type of a person like me, you can use the Pool Math webpage. Under the heading "Effects of adding chemicals" you can dial in your SWG runtime/percentage by selecting "chlorine gas" from the drop-down. If your SWG produces .92 lbs (14.72 oz) of chlorine gas/per day at 100%, FC will increase by 12 ppm. You can work your way down from there.

Capture.JPG
 
  • Like
Reactions: carnivalday
Mike thats great info, I didnt know that was there. Im still bumbling my way thru that great Pool Math page, so thats something else I can play with. Im still a bit confused on the SWG, as if the SWG produces .92 lbs of chlorine per day, I dont know the formula for that, i.e. how many hours per day at how much percentage of the SWG running (60%? 80%). But thats a headache for another day, thanks!!
 
carnivalday said:
In my new pool, I tested my salt level at 3800 ppms. The reading on the box is at 60% clorinating. It seems my test level is just a bit high, but how do I know where I can actually set the SWG at. Is it dependent on the RPMs of the pump? I have the pump now at 1800 rpms. Is there any calculation I can use so Im not operating this thing blindly?
Click to expand...

Is this pool in a screened cage? If so, that greatly reduces chlorine demand and to some extent the need for high CYA. I've found that CYA of 30-50 is plenty high enough for a screened pool in central Florida. Chlorine demand is rather low now and still dropping. My SWG cell is powered is only 60 minutes a day now and based on your SWG and pool size I'd suspect you'd need about the same assuming your CYA is 30 or more. You will likely find some days in late January and early February when the water temperature drops below 58 degrees or so and your SWG will automatically stop producing. You'll need to supplement with manual doses of chlorine if that happens often enough.
 
carnivalday said:
Mike thats great info, I didnt know that was there. Im still bumbling my way thru that great Pool Math page, so thats something else I can play with. Im still a bit confused on the SWG, as if the SWG produces .92 lbs of chlorine per day, I dont know the formula for that, i.e. how many hours per day at how much percentage of the SWG running (60%? 80%). But thats a headache for another day, thanks!!
Click to expand...

Here is the math for your spreadsheet...

Your cell will generate 12 ppm of FC if run at 100% 24 hours a day in your 9200 gallon pool. Reduce the 12 ppm by the % you reduce cell generation and by the % you run run your pump less than 24 hours a day.

Run the SWG at 50% and pump at 12 hours a day that is 12ppm * .5 * .5 = 3 ppm FC a day.
 
Fuldo, yes it is in a screened cage. In fact Im really surprised that I can feel the difference in the cage from outside. So that really makes sense that I can lower the CYA a bit because of that, especially now. Thanks!
 
Awesome, Allen..just awesome. Thats exactly what I need. Perfect. Im assuming I can now plug those numbers into the PoolMath page. This thread is amazing, I cant believe how much info there is here. thank you all so very very much for helping this old gal. Fabulous!
 
Okay Allen, how do I plug in those SWG numbers (as Allen runs screaming from his computer....Noooooooo!!!). Your conclusion is "Run the SWG at 50% and pump at 12 hours a day that is 12ppm * .5 * .5 = 3 ppm FC a day". Perfect. Ive finally got numbers where I know what the output will be from my SWG. Now...I dont know what to do with it? Your formula gives me 3 ppm FC a day. Now how do I know how much FC I need from my SWG? I have my FC levels and my salt levels. Where does the SWG production get computed into my test numbers?
 
carnivalday said:
Okay Allen, how do I plug in those SWG numbers (as Allen runs screaming from his computer....Noooooooo!!!). Your conclusion is "Run the SWG at 50% and pump at 12 hours a day that is 12ppm * .5 * .5 = 3 ppm FC a day". Perfect. Ive finally got numbers where I know what the output will be from my SWG. Now...I dont know what to do with it? Your formula gives me 3 ppm FC a day. Now how do I know how much FC I need from my SWG? I have my FC levels and my salt levels. Where does the SWG production get computed into my test numbers?
Click to expand...

FC consumption varies with the seasons and weather. On average a pool can use .5 ppm/day in the winter and 3 ppm or more on a sunny summer day. This is where your daily testing comes in for you to learn what FC your pool in your environment needs. You need to make adjustments to give your pool more chlorine if you see the FC dropping and reduce chlorine if the FC is rising. That is why the FC/CYA Levels gives a target and a minimum FC level.

With the SWG you need to dial it in over time. If you see the FC rising then you turn down the % or reduce the pump runtime, and if the FC is dropping then you increase the % or runtime. As you get to learn your pool you will see the pattern to the adjustments over the seasons. A SWG is not set and forget.

You have a wide range in the FC/CYA Levels to work with between the minimum and SLAM FC maximum for your CYA level to just keep the FC within.
 
Last edited:
  • Like
Reactions: Rancho Cost-a-Lotta and carnivalday

Enjoying this content?

Support TFP with a donation.

Give Support
You must log in or register to reply here.
Thread Status
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.
Top Bottom
Back
Jump to latest Follow Reply