Converting to SWG

[fziffel]

I am changing from liquid chlorine to CircuPool RJ-60 PLUS Salt Chlorine Generator. Needed to raise salt from about 750 to ~ 3500 in my 24000 gal in ground pool. Normal clean filter pressure = 17psi. After adding two 40lb bags of pool salt, pressure rose to ~ 24psi. I did backwash before adding salt. After ryunning pump for 24 hours straight, pressure dropped to ~ 21psi. I still have ~ 10 - bags to add. Is this pressure too hi? How can I get this salt added without such a huge increase in pressure? Should I backwash again?

 

[mknauss]

How did you add the salt? What brand was the salt? How are you testing the salinity of the water?

 

[fziffel]

I poured 2 bags into the pool as I walked the permiter, then brushed. Morton's pool salt. Right now I am relying on pool stores for salinity, my Taylor kit is due to arrive tomorrow. 1 store read 750, another 1000.

 

[mknauss]

OK -- none of that should have effected your filter pressure. Salt has no effect.

I would not add all of that salt until you get your kit. Better to have to add more than drain water.

Are you chlorinating your water per the FC/CYA Levels for non-SWCG pools? Might you have the start of an algae bloom?

 

[fziffel]

Oh, I thought for sure the increased pressure was due to adding the salt & that running the pump longer would help dissolve it. Pool is super clean & clear. I am chlorinating the pool per the cart for non-SWCG pools. FC ~ 3, PH - 7.3, TA - 80, CYA is ~ 30. I am trying to raise CYA but the granuals placed into a sock in the skimmer basket, also causes a rise in filter pressure. So I bought some liquid CYA to add.

 

[mknauss]

The CYA will not increase your sand filter pressure unless you are dumping in pounds of it all at once. Something else is going on. I would suggest you run an OCLT before increasing your CYA any more.

 

[fziffel]

Will do & thank you!!