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Why is it that most posts I see people posting 60-80 cya levels and only 2-3ppm FC levels? When I look at Ben's best guess it should be 5-10.
I did the same thing all last year and didn't have any problem, but this one has always confused me. I know it's called best guess, but why don't I see more people with levels that match up? (Maybe I just notice them more....)
Do the SWG allow lower FC levels or am I missing something?
(33k gal, vinyl, Aquarite)
If you read the owners guide for an Aquarite SWG they want you to run 80PPM on the stabilizer.
With our 26K gallon round pool I run 40PPM stabilizer and maintain 3.5 PPM FC. The water is crystal clear and I've never had an algea problem.
I run the pump on low speed for 12 hours per night with the SWG set on 40-50 %. All readings are taken with a Taylor test kit during the middle of the day with pump off.
Another example....you run at 3, but the chart says you should be at 5 minimum, correct???
I agree it works perfect, I just don't quite get the chart!!!!
The chart says 3-6 ppm for a CYA of 40. And the chart isn't an absolute, it's a guideline...
Janet
Hi all. I had a big issue with Goldline (now Hayward) when we first started installing their units a few years back, about the higher cya level. There is apparently nothing inherent in the SWG which would require twice as much cya as a pool chlorinated in other ways. However, they all seem to call for a higher cya level. (Actually, after a few 'heated' discussions, I'm supprised they still answer my calls :) )
As I see it; salt will only leave the pool by backwashing or splashout. Similarly, cya isn't going anywhere the salt doesn't go (niether will evaporate with the water). Therefore, I present "Waste's Best Guess Chart For CYA in a SWG Pool":
*** For every 100 lbs salt added, add 1 lb cya***
This will get you 30-40 ppm cya ( for systems that opperate on a 2600 - 3400 ppm salinity) Keep your cl ~ 2.5 - 3 and you should not experience problems!