Salt Level

[IanB]

Hi,

I have a Salt Water Generator from Watermaid. This has been ok for 2 years with a salt level 0f 6000pm @ 20deg but I have now put in heating that has raised the temperature to 30deg. I am now confused should I decrease or increase the salt level with the hotter water temperature. The exact level would be nice if any one knows.

Regards.

[chem geek]

Roughly speaking, the conductivity of water with salt in it increases by about 2%/ºC so that's 1.02^10 = 22% for a 10ºC increase in temperature. So your salt level could be 1/(1+.22) = 82% of its level at 20ºC, so 6000*0.82 = 4920 ppm. This assumes that your unit doesn't automatically compensate for conductivity changes as a function of temperature (i.e. it may vary voltage automatically to maintain a more constant current).

[Pool Clown]

This assumes that your unit doesn't automatically compensate for conductivity changes as a function of temperature (i.e. it may vary voltage automatically to maintain a more constant current).

Thats what I would think too. I mean, how can the consumer be expected to adjust the salinity 4 times a year or more? Adding salt? ok no brainer, but to remove salt would be a head ache, total brainer.

[IanB]

Thanks and I agree a waste of water to empty and refill the pool all the time but my salt level is high so will have to refill.

Regards.