Corona Discharge vs UV ozonaters vs salt water?

[MN2WA]

Hello there -
We currently have a vinyl liner chlorine pool with an autocover (a rather big one, 25'x80') that we would like to reduce our chemical use in. Does anyone know of a good comparison between UV vs Corona Discharge? Or UV vs Salt Water?

Any help is appreciated!!

Thank you!

 

[Bama Rambler]

Is that a public pool? If it is, you're going to be bound by the local jurisdiction. You might want to look into those requirements first.

Hopefully someone will be along to give you some info.

 

[JasonLion]

Those three aren't really directly comparable. Corona Discharge and UV are ways of reducing the CC levels as an adjunct to a sanitizing system, while a SWG (salt water generator) is a sanitizing system.

I am not a fan of corona discharge. UV is very nice in a public pool/high bather load, not worth it in a residential/low bather load pool.

 

[chem geek]

Welcome to TFP!

Recognize that if the pool is low bather load, such as with most residential pools, then supplemental oxidizers do not reduce chlorine usage because most of the chlorine usage is due to breakdown from sunlight. So in those scenarios, having a higher CYA level and proportionately higher FC level can help and using an opaque solar cover during the day helps. Obviously, the latter is only an option for a pool that is not used frequently.

Since your pool is very large, it is more likely to be a high bather load pool in which case supplemental oxidation can help. A properly sized ozone system can cut down chlorine usage, but only in high bather-load pools (in low bather-load pools ozone actually increases chlorine demand since it reacts with chlorine to from chloride and chlorate). A saltwater chlorine generator will generate the chlorine on-site inline and if properly sized can eliminate additional sanitizer/oxidizer usage. UV is most helpful for indoor pools not exposed to sunlight since it can help control chloramines.