Liquid Chlorine and Salt

[EQArtimus]

I am in the process of putting together a liquid chlorine feeder for my pool and I wanted to get clear about something...

When I add a gallon of 6% bleach to my water, it will raise the FC by 2.1 and the salt by 3.4. Now this is something I could be doing sometimes on a daily basis. So my question is: though the FC essentially completely leaves the water, the salt remains to accumulate. Is this not a much slower version of the CYA situation? The salt will build up over time without draining ?

So if you can taste 2000 ppm of salt, you will notice this buildup after about 600 gallons of bleach? (minus whatever salt is in the water to start with?)
Seems like a 4-5 year cycle..??

Is this right?

 

[BBBliever]

Most forms of chlorine will either add salt or calcium.

Most people have to drain/refill due to high calcium long before salt is a concern.

Most people like the effects of salt levels around 2000 ppm. Taste is subjective but the salt will incease so slowly you will likely not even notice it.

 

[chem geek]

You are basically correct that it takes years for the salt level to build up, assuming no water dilution, and that at some point a partial drain/refill would be needed. This is far longer than would occur with a CH rise from Cal-Hypo (or from evaporation and refill of high CH water) or from a CYA rise from Trichlor or Dichlor. Also, with backwashing/cleaning of the filter and water overflow from summer or winter rains, one usually has dilution of the pool water on a regular basis. In my own pool, I use winter rains to dilute the salt increase from chlorine and Muriatic Acid by roughly 50% each year so I keep the salt level in check at under 1000 ppm.