Even tho my local pool place told me I shouldn't use a swg in my above ground pool, I started using the cheaper versions a few years ago. They worked great, but the 1st one only lasted a year and the transformer melted and the 2nd one was working okay, tho I had only used it for less than a year when I needed a new liner and I went ahead and bought the Hayward Goldline Aquatrol.
Absolutely the best thing I have ever bought for the pool.
The hayward has a timer built into the control box and my swimming pool is literally maintenance free now - a 24" round 54" deep pool.
For cleaning, I have a polaris 65 that I just leave connected all of the time and I do absolutely nothing to my pool. The only thing I have done this year is add salt because I inadvertently drained out about half the water in early spring.
I actually don't really get out there every day, but my wife and grandkids are always out there, but there is no need as there is never anything for me to do except jump in.
I guess I ought to clean my filter, a hayward cartridge filter because I have not cleaned it off since i opened the pool, but the water is still flowing great (the pressure gauge needs replaced).
When I used chlorine, if I missed a day or 2 I would spend a whole lot of time trying to get things back on track, normally using the BBB method.
Since using the swg - the ph and everything has always stayed pretty much spot on, don;t know why but I love it.
The polaris has even been working right and not just going in circles and it is on it's 2nd year. Seems I used to always have to be messing with it. I know that has nothing to do with the swg, but it sure makes my life easy.
There really are trouble free pools and I am here to tell you if you don;t like messing with your pool all of the time, get yourself a decent swg (I love the hayward), kick back and enjoy the pool instead of always having to be messing with trying to get everything right.
I was told it would rust my pool - I believe this is the 5th year i have used salt and have had zero problems. My pool is actually about 16 years old now and I did have some rust on the metal tops, but when i replaced my liner I used a wire wheel and knocked off all the rust and repainted them. I was going to use auto paint but got lazy and just used brush on Rustoleum and it actually came out looking great, almost as good as new.
I am thinking they didn't want me to switch because they knew I wouldn;t be buying any chemicals from them (I didn;t anyway as I went bbb).
All I know is it is perfect if u are like me and don;t like messing with the pool but instead just like to use it.....