as always, internet advice is split and confusing, thats why I was hoping for first hand experience.
A salt water pool (as i understand it) uses only a tenth of the salt content that the sea has. An electrically operated cylinder produces chlorine from the salt in the water.
it all looks very promising, but i would like to hear from people who have actually experienced the whole thing.
My sand filter needs replacing so thats why I'm thinking of going whole hog, with glass beads as well..
I kind of hesitate to offer my experience on this subject, for two reasons, 1) I'm new to it myself and have only been running a saltwater chorination system for a month, and 2) my pool is substantially, smaller. Above ground, 1500 gal.
I can say that I am completely thrilled with the system, the pool water and the dramatic difference in pool water quality and our swimming experience. My pool is really for my 5-yr old granddaughter. She loves the water and swimming and it is difficult to keep her out of the pool. Her mother was the same way. I can say that I do not now get out of the pool due to the "chlorine" experience. I get out because I get cold instead. I didn't stay in last year long enough to get cold.
Our pool last year was less than half the size and we used a cartridge filter and bromine, rather than chlorine. The cartridge filter was completely inadequate and the bromine didn't seem to be very effective. I knew we had to find a better solution.
That solution is a sand filter that is at least twice oversized for this pool. The saltwater is a welcome change. It hardly has any chlorine smell, except when the pool has sat overnight with the cover on, which sits directly on the water. I do not notice it when swimming and the salt is barely noticeable. The pool water is incredibly clear and clean. The oversized sand filter may be largely responsible, but I am convinced the saltwater derived chlorine is doing its job also.
The whole system was challenging to install and get running correctly. This was in large part due to the fact that the filter/salt injector system is a different brand than the pool and the fittings didn't match very well. I had to futz quite a bit and ended up machining some fittings from PVC pipe fittings, including turning "O" ring grooves. Now that it is done and working, it is great. Getting it there was a two week endeavor.
I have yet to add any more salt, although I haven't checked the "chemistry" since getting it set up and running. I need to do that soon.
Both the sand filter and salt injector run in increments of whole hours. The sand filter can circulate the entire contents of my pool in an hour. I run it for two hours, though, so that once the salt injector starts its hour, the sand filter was running before and continues afterward. The injector must have flow through it to function. I have yet to have to backwash the sand filter, at least according the the pressure gauge. Pressure is still in the "green" after a month. Keeping the pool covered when it isn't in use makes a huge difference.
And, as someone mentioned, the salt concentration is quite low. The comment was that it is about one-tenth that of sea water. I think that is a good estimate. I can taste the salt, but it is nothing like that of sea water. I grew up swimming/bodysurfing in southern California in the 1950s. I know what sea water is like. The other thing is that there is no salt residue. I do not notice it on my skin or on my swimsuit or towels. As a kid, I swam once in the Salton Sea, in the desert of eastern southern California. It was difficult to get submerged due to the extra salty water. It left quite a scaly scum on the skin also.
I hope this helps.