- Oct 23, 2008
- 90
- Pool Size
- 20000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite (T-15)
I have a outdoor, 21,000 gal plaster pool, screened cage, no pool cover, solar heat, SWG, cartridge filter, sense & dispense system, Goldline controller in SW Florida and I like to keep the FC level at 3.5.
I don't understand why with an ORP sensor/probe system the recomended CYA level should be 30-50 ppm but without an ORP sensor/probe then the recommended CYA level is 70-80 ppm. If all things being equal, except for the use of an ORP sensor, why is there a difference in CYA levels? It was my understanding that a higher CYA level would cushion/blanket chlorine from sunlight/UV and therefore I could dial back the SWG.
Thanx for the help...
I don't understand why with an ORP sensor/probe system the recomended CYA level should be 30-50 ppm but without an ORP sensor/probe then the recommended CYA level is 70-80 ppm. If all things being equal, except for the use of an ORP sensor, why is there a difference in CYA levels? It was my understanding that a higher CYA level would cushion/blanket chlorine from sunlight/UV and therefore I could dial back the SWG.
Thanx for the help...