New SWG and green pool

[mwsmith2]

make sure that your CYA levels are ok...most manufacturers of SWG seem to recommend between 60-80 ppm.

Woah! That's generally accepted around here as being Too High. 40 ppm is plenty. High CYA will limit the effectiveness of your Cl.

Michael

[waterbear]

There was a discussion about this before the board crashed and I belive it was Ben (could be wrong) who said that in this case it might be better to follow the manufacturer's suggestion since dosing the pool with chlorine from a salt water generator was different than dosing it with bleach in that there is a small quantitly of water that is superchlorinated and then mixed into the pool whenever the pump and cell are operational as opposed to the dose being mixed into the pool and diluted right away and perhaps for this reason the higher CYA level are recommended. At any rate I run betwen 60-80 ppm CYA, keep the pool at 3 ppm FC and the spa at about 5ppm and have never had any CC or any algae growth!

It's times like this that you really wish the board did not crash. So much good info was lost!

[tonyl]

Waterbear is right. I keep mine at 70-80 ppm cya and 2.0~ chlorine for going on my 5th year without a hint of algae and my water hits 90 in Aug. Poolsean said he has many pools in S.Fla maintaining those same levels without problems.

[mwsmith2]

There was also mention of how high CYA levels lead to plaster erosion too. That's why I shy away from it. I do remember Ben discussing talking about running high CYA levels, but it seems to me that was more for folks on bleach who wanted to only mess with their pool once a week?

Michael

[ConnieStewart]

Thanks for everyone's help! I got the algae under control, got my SWG hooked up and I must say I LOVE LOVE LOVE it!!! So glad I made the switch! The water is so clear, so soft, and is more sparklier than ever (not to mention my DH is building me a deck all the way around it)! It's going to be a good swimming season, I can tell!!!

Thanks again!!!

Connie

[c130jake]

There was also mention of how high CYA levels lead to plaster erosion too. That's why I shy away from it. I do remember Ben discussing talking about running high CYA levels, but it seems to me that was more for folks on bleach who wanted to only mess with their pool once a week?

Michael

My brother the Masters in electro-chemistry says the higher CYA levels are required to allow for more free chlorine to be produced based on the salt content. It's that old cathode-anode thing I guess. I dropped out of P-chem 20 years ago cause it had too much calculus or I could explain it better...