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The water temp in March was about 62-65 °F. Currently, it is about 70-74 °F. The temperature varies slightly as the sun heats it up during the day and then it cools off at night. I understand what you're saying about the temperature variation, but what I'm seeing is the exact opposite of...

I should clarify: The salt readings are from the cell, and they have been verified, from time to time, within about 10-15% by the pool store. My salt cell is currently non-operational because it is reading below Pentair's threshold level of 2600ppm. I understand that pool-store readings can be...

FWIW, I have ruled out a leak. I've had the autofill turned off for the last 4 weeks following a rare heavy rain here in So. California. In that time, the water level has dropped by less than an inch. I don't mind adding more salt, but I'm afraid that the "true" salt levels are approaching...

I've got an IC-40 cell that I installed in April 2013. After some salt-level issues last year, it worked generally ok through last summer and early fall. This year, I fired up the pool around the 2nd week of March. Salt level reading was around 2600 ppm, slightly lower than the ~3100 ppm that I...

You won't save any money by going with any SWG. What you are doing is buying the convenience of not having to manually add chlorine, whether it is liquid or tablets. A salt pool also tends to be more stable because the chlorine is generated around the clock, and this definitely makes...

I'm curious though, did your salt readings also drop after adding boric acid?

Not sure if resolved is the right word. I've got a functioning SWG. I'm just concerened that the true salt levels are significantly higher that what the various meters are indicating. For now, I don't know if there is a better solution. Even if I got a more "accurate" reading, it wouldn't help...

FWIW, I had my plumber setup up a diverter valve so that I could run my cleaner exclusively. I then set up my ET to toggle between pool filtering and floor cleaning. Otherwise, I'd have to run the pump at an even higher speed since only ~half the flow would be coming from the cleaner. I don't...

BTW, 2500 rpm seems a bit excessive for routine filtering. The Intelliflo is a very powerful pump, equivalent to roughly 3hp, if I recall. I run my pump at around 1000-1200 rpm for slow filtering (10-12 hrs/day), and around 2200-2400 rpm for vacuuming (1 hr/day) and surface skimming (1 hr/day)...

I have a very similar setup and it is generally working well for me. I know that I spent some time tinkering with the programming, but that was 6 years ago, so I don't remember all the details. First, it sounds like the IC40 is running at 5% during your 3am-noon schedule. The LED lights only...

Glad I could help. You can buy the screens on ebay for about 8 dollars shipped. I ordered one a few months ago but it got lost in the mail. I never got around to ordering another one. I'm not sure that you'll be able to find them in pool stores because it's not usually considered an item that...

I just checked my filter. I didn't take it all the way apart, but I'm 99% certain that the port on the top of the Pentair relief valve is a female 1/4-NPT. You've probably already figured that out, but I thought I'd post it here for the next person that comes across this thread.

I would have to double-check, but I believe that it is a standard thread. Probably 1/4 NPT. I'm pretty sure that it will accept any pressure gauges with a stand fitting. It should be a fairly simple matter to install a tee and a couple of elbows so that you can use the auto-relief and the...

TLH, The problem repeated itself many times. I found out the same thing that you did. A small rock had gotten lodged into the gears and caused it to freeze up. It was a relatively simple matter to disassemble the box and put it back together again. This happened several times over the last...

Isn't this overcomplicating the issue? Why not just leave the Intellichlor on all the time. When the Intelliflo shuts off, then the flow sensor will sense it and basically shut down the Intellichlor. There will be a slight power draw for the IC controller, I'm guessing 5-10 watts, but that...

Thanks Poolman, I understand what you're saying, but there is no rational reason for the salt levels to drop if there was no leak. I'm certainly willing to listen to any theories. I would be happy to add a couple more bags, but I'm concerned that the water might become too saline and start...

Update: Well, I've pretty much confirmed that I do not have a leak. I've had the autofill off since 6pm on May 3rd. As of noon today, May 11, the water level has not dropped significantly. Maybe about an inch or so over 7.5 days. Hard to tell because we had an unusual rainshower about 5 days...

I just recently replace the flow sensor on my cell. I suppose this is one way to do it, and it should work just as well. However, be careful not to over-torque the sensor. Although I believe that it is a straight thread, there may not be enough thread left for another half-turn. I would suggest...

I may have to try that. However, the immediate problem is more mysterious. The running around was a one-time thing, and it did somewhat validate the readings from the cell and from the Pentair guy's pocket tester. My bucket test was generally negative after approximately 30 hrs. I can't discern...

Well, this is getting interesting. Went to two other pool stores and had my water tested using a pocket tester. Both stores measured the salt levels at approx 1800-1900 ppm. So, I'm faced with two possibilities: 1. Something about the borates affects the conductivity of the water which is...

I had my pool water tested at a Leslie's store near my work. This is a different store than my test from a few weeks ago. The result: 2700 ppm measured using a salt test strip. Their pocket tester was not working. Not as high as I was thinking, but much higher than the 1800 ppm measured by the...

JasonLion's answer is correct. Simple trial and error will let you zero in on a setting within a week or so. I have a very similar setup to the OP's pool. My first season, I wound up running my IC40 at around 10-15 percent with the pool pump on about 12 hours per day. I found that I did need to...

Well, that's what I hope to find out tomorrow by getting tests done at multiple locations. I'm guessing most pool stores use a typical pocket-tester device. I don't know what type of sensor the service guy used. Does Pentair make and/or sell a salt level meter? BTW, for the record, the service...

Also, the reason I posted in Chemistry 201 wast that I wanted to ask the more specific question as to whether borates could cause inaccurate salt level readings. As I understand the chemistry, the NaCl levels are not affected. However, could the borates alter the conductivity of the water in...

Sorry for cross-posting. I thought it might be appropriate to post in the Chemistry section because it concerned borates.

Re: Question for experts: Can borates affect salt level read Thanks for the quick response, Jason. I'm 98 percent certain that my pool does not have a significant leak because my autofill has been shut off for the last month or so. About the end of last year, I raised the water level in my...

I posted this question in the Chemistry 201 section: Topics merged. Please keep everything relating to one problem or project together in once place. Thanks JasonLion

Question for experts: Can borates affect salt level readings So I recently added borates to my 6 year old pool on approximately April 4th. . All seemed well. About two weeks prior to that, I had installed a brand new Pentair IC40 salt cell. My two previous cells died, and so I'd been using...

Well, called Pentair and they had a pool repair guy come out today. He claims that the water really is at 1800 ppm, per his supposedly calibrated salt tester. I'll have to take a sample in to a different pool store to confirm my levels. I just don't see how the levels could drop from 3200 to...

OK, I'll double check, although I'm pretty certain I checked the wiring pretty well at the time of installation. Thanks again for your help.