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Our pool was built in 2007- 17 years old. The liner has a 20 year warranty but it has faded a fair amount below the water line (probably due to over-chlorination a few times) and is showing some mild brown staining above the water line (reasons unknown, various remediation attempts had little...

After 15 years of use, some of my major pool equipment is getting a little tired and could use replacement soon. All of the existing equipment has 2 inch connectors, yet all of it is reduced to 1-1/2" and all of the suction, returns and equipment are all 1-1/2 with 90 sharp elbows. It would seem...

I'm getting ready to schedule my pool closing for Oct 31 here in MN. I don't trust myself to do this correctly, so I always have used the pool company that built the pool, but they were purchased by a competitor this year and now the price nearly doubled. While I was looking at previous closing...

Pool School is perfect, almost. It would be helpful if, along with the recommended chems and levels, there were some basic guidelines as to HOW to add each of the various chemicals. One sentence is enough. Disperse directly into the pool? Pour in front of return? Should it go in the skimmer...

The background: For reasons that have not yet been determined, the output of my SWG failed and the FC went to 0 sometime during the week. The obvious surprise consequence was a cloudy pool the following weekend, so I hit the turbo boost on the cell and tossed in about a pound of dichlor that's...

I add about 2 inches of water when I open the pool, then another inch or two twice more during the season for a total of 5-6 inches total (2000 - 2500 gal). Pool is 18' x 36' rectangle. Since I have an autocover, rain does not contribute to my water level, but neither does evaporation subtract...

Every year I add another bag of salt to my pool to keep it at 3100 ppm, more or less. Everyone knows that salt is just sodium chloride (NaCl). We all are aware (at least peripherally) of what happens to the chlorine part of the equation, ultimately gassing off in one form or another. The sodium...

I have brown staining above the water line. I tested it with vitamin c, which lightened it a bit, but did not remove it- I made a loose slurry of crushed ascorbic acid vitamin c, sponged it on a test area and lightly scrubbed for about 3 minutes. It did not respond to a household cleaner test...

I didn't test my water right at opening because I thought I'd give my SWG a chance to catch up from the winter's sleep. Pool opening never gives me any surprises, the water is always as clear as the summer before. But... My CC is 2.0 FC = 5.5 pH =7.6 TA = 225 CH = 180 CYA = 40 Salt = 3100 Temp...

Just thought I'd share my new solar pool heater project. The marketplace is full of solar gadgets. They all work, but how well? With solar, performance efficiency varies wildly, and ROI due to system cost varies just as much. And that doesn't take into account the latitude and weather. First...

My CH is getting to be consistently over 300 and I have a vinyl liner and SWG. The recommendation of PoolMath is to replace 20% of the water. That's about 3400 gallons in my case. I have no easy way to get that much water down the sewer drain, so my option is to pump it onto the yard or other...

I replaced our old single speed pump this summer and have been enjoying the savings. However, I am confused by the programming instructions, so I just set it to run at the default speed 3 and let it go. From reading various posts, I could probably reduce the speed by half and still have adequate...

I'm shooting for a CYA of 70 for my pool. It seems that the previous owner neglected CYA, or had advice that he didn't need it due to the Autocover. (I received this advice from the pool store too). CYA was around 10 when we bought the place last year. Is this a good target, keeping in mind that...

We have a outdoor in-ground salt pool with an autocover. It is always covered when not in use. The chlorine levels vary from one extreme to the other in the course of a week because it is not exposed to sunlight or air for 5-6 days at a time, followed by half-day pool parties of 4-8 kids. I'm...

I initially thought that replacing my single speed pump w/ VS pump was the way to go, but a little market research led me to the variable FLOW pump, which seems even more efficient and I don't have to do the various calculations and such as with a VS pump. Sure it costs more, but price is not my...

My local pool store suggested that a new Pentair VS pump is a direct replacement for my old Pentair single speed pump w/ the same plumbing dimensions. If this is true, then I might as well do it myself if no major plumbing alterations are necessary. My pump specs are in the signature. what is...