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The installer (and my neighbor) is going to bring me some. The plugs look different than most. The plugs in the kit you get from "the internet" are tapered and use a straight metal probe to push them into the 1/4" tube. I don't know if the ones he uses use any kind of special tool. My break...

My iSwim solar system is now 8 years old and I'm getting some leaking tubes. So far all of them have been where one of the 1/4" tubes in the field mates to the header. My installer has been out and used to do it for free but the last trip was $200 so this is becoming a DIY project... Does...

PS. Your recollection of Vegas water is correct. The calcium content of tap water is nearly off the scale and it just gets worse. Between the calcium and phosphates (I truly have no idea where it comes from unless it is the pigeon s*** that blows off the roof into the pool) I'm on a regimen...

I'm just back here and didn't mark this to get replies so sorry for the delay. Sorry, I was typing without the stuff in front of me. I used Ascorbic Acid (which is Vitamin C according to the label). Both start with "A" :)

I just remembered I posted this. I tried many things. We had a drain and clean and they polished the surface of the plaster. It came back by fall. Everyone said yellow algae (I know, but I tried anyway, had nothing to lose for $20 of the yellow gone.) Water test results never showed iron...

Quite likely. But to reiterate: It was not a problem until the phosphate level went through the roof and FC dropped due to a salt cell failure. So the system was sitting on the edge of a cliff with only a step backwards keeping the person with the selfie camera from falling into the Grand...

I know the mantra of this forum is that pool stores are evil and that phosphates are a waste. I happen to disagree. I've found a store that has ONE PERSON that I trust, and being an engineer, have verified by three independent sources that the numbers are reliable. End of discussion. I won't...

Boy the people here must have stock in pool chemical test companies. I trust my pool supply place. Test results have been correlated to a home test and to two different test locations using different technologies. You may not trust them but I do. The article quoted is what I was referring...

It's at 2500 from 300 and may be contributing to other problems so I'm using a phosphate remover. I am new here and didn't see the recommendations and I'm using Bio-Dex max which seems similar in doses to the ones recommended here. I started by adding 16 oz to start. It left a really cool...

So as I mentioned elsewhere I used to test my own water. All the bottles of drops and everything. Pool store got the same results. The last test I so doubted the new automated disc test that I went to another store that used the drops and everything right across the line was the same (and...

I generally clean the salt cell whenever I clean the filters. Once in the spring when we bring the pool on line, then every 3 months until I put it down for the winter usually in mid-Nov (yes, with the solar heater and blanket I usually get from mid-March to April to mid November). If we get a...

How are the different IC20/40/60 different? Is it possible the blades that look fine aren't used in the IC40 and it's not that they are still working but simply that they aren't used and that the blackened ones are the operational panels?

Yes. I tried CLR. It didn't affect it either. . It's not organic - there are no sunscreen or hair product (personal care materials) used in the spa. Like I said, it's not calcium since straight from the bottle (31%) muratic acid doesn't react with it. I've tried the abrasives like...

Today I pulled the cell to look more closely at it. The last time I cleaned it I just ran a quick acid bath and put it back because it wasn't too dirty, but I didn't inspect closely. Today was an extra maintenance day so I pulled it to inspect closer. I conclude based on the wear at the...

They are glazed ceramic tile. But I'm also certain that they've become etched... Even though I can't feel it it is impervious to chemicals so it has to be the surface itself... Lesson learned from pool #1: Don't get dark tile or dark grout.

What would be an iron source that is this widespread? Our water (Vegas) is off the charts for calcium from the tap, but it doesn't have any iron hardness. The only source I can think of is the rebar, but I've seen rebar stains (a friend's pool) and they are much more localized and very dark...

So you don't believe that the tests from two different locations using different testing methods aren't accurate? Come on. I'm an engineer and been measuring things for 50+ years this way and these results are verified. The salt is 3000+-. And has been for two years since the last water...

About 6-8 weeks ago I noticed some yellow or orange discoloration starting to appear. At that time it was mostly it was on the bottom surface and on the steps of the spa. At first it was some splotches in the deep. It’s not rebar rust – this is too wide spread and splotchy (and I've seen rebar...

I'm not going to invest in a boatload of test materials. I trust my pool place to do that. The Pentair unit has read high since the beginning and I just compensate for it. The people from the place that Pentair subs their warranty work through ran it through two different meter type testers...

Is there a way to "test" the Pentair SWCG? Leslies at one time had a testing unit that could test Hayward and similar units but it didn't handle the Pentair. Can it be rebuilt? I suppose this has been covered somewhere but the quick scan didn't mention it.

Just another tidbit although I think it's probably "normal" - I have to add about 1/2 gallon of acid (31%) every other day or so to keep the pH down and the chlorine up. Sometimes I need a little more. I like to keep the pH at the lower end of the 7.2-7.8 range. I know the chemical...

Thanks for the responses! Re #2: I test almost daily with AquaCheck test strips. This particular batch doesn't test CYA but I take a sample in to Leslies whenever I need acid. The last of the strip tests with CYA was 4-6 weeks ago and it was in the 50 range. The Leslie's store I usually...

Our spa is integrated with the pool. The tiles at the top have gotten a "bathtub ring" that cannot be removed. At first I thought it was a calcium buildup but it doesn't react to anything I can think of. 1. Acid (relatively strong solution) to cut it. No success. The acid does react with...

Our pool is 21000 gallons. At the beginning of the season (and for prior years) I ran the IC40 at 60-70% for about 8 hours per day to get good chlorine levels. Lately the chlorine in the pool has been lower than what the cell used to generate so now I'm having to run at 90% just to get hardly...

Careful measurement and product comparison yielded a O-ring that fit. The closest to actual measurements (which were for a worn part from another actuator shaft) are 3/4 OD x 5/8 ID x 1/16. Lowes stocks this as a Danco #40. Note this is a 1/16 dia ring, not the typical 3/32.