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Have you calculated your csi? I would only mess with the ph if you needed to lower your csi value.

With a SWG in a northern climate, I find that I have to deal with a decreasing CYA level. I always have the solar cover on when we aren't swimming, so evaporative losses are minimal and with the rain that we get here, I regularly need to pump out water. That, combined with pumping down to...

We probably aren't that far apart in cost per btu. My 100 was conservative and my heater and pool are nearly double the size. Either way, I'm happy to pay it in order to extend my season on either end.

My ph doesn't change much over the winter while it's closed. It drops a bit if anything. Rain is more acidic than my pool water.

Yep, from the faucet. No need to test for cya. It will be zero.

400 - 600 a month seems high to me too. I did some back of the napkin calculations for my natural gas fired heater and figured that I would spend about $100 per month on gas with heating the pool up on weekends only. Assuming about 10 hours of heating per weekend.

Good advice from Pooldv! Regarding a safety cover, we have one and I think that it works great. It fits snugly so very little debris can get in during the winter. It is permeable, so water does not pond on it. Snow does accumulate on it, but it melts eventually. They are a bit pricy and...

In my opinion, if your ph was that stable all summer, leave it well enough alone. Lowering TA takes time so you probably won't get that done prior to closing anyway. To lower the TA, you lower the ph and then you aerate. If it makes you feel better, add MA to lower your ph before closing...

In upstate NY I keep the solar cover on whenever they pool is not is use. Not so much to keep the debris out, but certainly it helps the water stay warmer. Particularly overnight.

Hello fellow NYer! I have had a SWG for 3 seasons now. I am so glad that we chose that method of sanitation. We had made that choice before I found TFP, so I got lucky. We have had not issue with corrosion of either metals or concrete. We have brushed concrete patio around the pool. I did...

I built a pool that has the traditional deep end, but we have no diving board. I have 12 and 7 year old boys. The older kids congregate in the deep end. The younger ones stay in the shallow more. I like having both - even though it is at the sacrifice of a longer flat area.

You need stabilizer. Without it, the chlorine will be rapidly consumed by the sun.

Use pool math from this site to calculate how much bleach is needed to bring your FC up to 12 ppm. You'll need to know the volume of your pool in gallons.

If you pass the OCLT, you are done with the slam. If you pass, let the FC come down on its own. Then you just maintain FC appropriate for your CYA level. Guidance on performing the overnight chlorine loss test is in pool school. Looks great!

Parts per thousand makes more sense. In that case, salt level would be okay. Your SWG reading low salt may be because of cold water. Mine will do that too. With that, I would still follow Jason's recommendation to perform a SLAM.

Regarding worms: yes, I had a ton of worms in the pool on opening this year. My robot sucked them up. Pretty gross to clean out. Regarding your chemistry: if your numbers are to be trusted, FC is low as well as cya for a salt pool. Also, something is way off with your salt reading. I...

I have a dolphin that is a couple of years old. It has the swivel for the cord and does not get tangled. I do not leave it in the pool. I let it do its run and then take it out and store it on the caddy. I have been pleased with it so far.

We did what you describe. Dug the pool and installed the liner and filled it with water in the fall. We covered it up for the winter and then the contractor came in the Spring to regrade and pour the concrete decking. I was happy with the results.

I think that you'll find that folks on this forum will not recommend any clarifier, regardless of its viscocity

I think that most agree that the solar cover is a pain with an above ground pool. It's harder to use a reel unless you've got a whole lot of deck around the pool to put the reel on. I have no personal experience with them, but I do see that they sell smaller solar covers that you can use...

That how my build was done. More by coincidence than by design. The dig started in October and the pool, liner, and backfill was done by mid November. The water goes on the day that the liner is put in place. No concrete patio or equipment installation until Spring. That way, they were able...

I've never done a SLAM myself, but it is my understanding that you keep the SWG off and maintain the FC at SLAM values until you've passed all 3 criteria. It seems that the OCLT is usually the last hurdle. Once you are satisfied that your SLAM is done, the FC will drift down on its own. Just...

You need chlorine in the pool and you need stabilizer. Will your pool builder be doing the chemicals as part of your build? When I had mine built, the pb initially raised the FC using liquid chlorine and then the SWG took over after that. He also added Enough stabilizer to get started. I...

A sales web site says that your model SWG is good for pools up to 40,000 gallons. If you are going to run it 24 hrs a day, try 50% since you have a 20,000 gallon pool. Adjust based on testing. If you want to only run the pump and SWG for part of the day, adjust the output higher accordingly.

Making some guesses regarding how the bottom slopes, I'd venture that your pool is in the neighborhood of 18,000 gallons.

It is stressful building a pool! I was in your shoes last year. My prediction is that you will get through this and by this time next year, it will be an insignificant memory. We just opened the pool Friday and the kids were in swimming yesterday. Keep those happy thoughts in your head and...

Results after letting the pump run for a day were better. Ph was 7.2 and TA was a more expected 80. I hadn't run a CYA test the day before. I ran that test yesterday and came in at < 30. I had expected that with the winter dilution so I already have a supply of CYA granules on hand ready to...

I didn't have the pump on yet at the time I collected the sample. It's been running now for 24 hrs. I guess that I should sample again before I start adding chems, huh?

I had the my pool builder open the pool for me yesterday. I grabbed a sample of water as soon as the cover was off. I was surprised that my TA was at 20 and that my Ph was at 7.0. When it was closed last October, the TA was around 100 and my Ph was very stable all summer around 7.8. The pool...

NY mice must not be as bright. I get dead mice on a regular basis (when the pool is open) Fish them out and maintain sanitation levels.