CYA "poll"

[Rangeball]

What level do you run your CYA at, and why?

[cajunfla]

well over 100, but not because I want too. Pool builder sold me a chlroine tablet tower during sales pitch. At that time I didn't know better, and still using tablets. I just hate to waste them. Will be draining the pool some this weekend to lower CYA. Moving to SWG hopefully this winter.

[cwstnsko]

I run about 35 PPM CYA. It is enough to keep the chlorine from being burned off too much by the sun, but minimizes the negative side effects. Keeping it low leaves a little headroom in case the SWG fails right when we're going on vacation. The low CYA would allow us to run a tri-chlor floater for a while, if necessary, without driving us to have to do 25 PPM shock treatments.

[xoroniox]

i run 0 cya, because when i tried to run a cya of 30-40 it was too much trouble because every 1-2 weeks i need to add 1-2" of water loss due to evaporation and also because of rain the cya was always low and i was constantly adding cya powder to bring it back up which was costing too much money. so instead i just add 2.5gallons of 10% bleach per week, half on monday other half on thurs or friday and float a 3" tablet 1 per week. this system works well for me.

-Arron

[mbar]

I like to start off with a cya of 30, then I use bleach and pucks during the summer. Starting off with 30 leaves me room to use the pucks for whey I am away and when I need them for stains. I also throw one in when my ph gets high, those pucks sure bring the ph down quick.

[aylad]

I keep mine at 80-90. I live in a HOT climate, my pool is full sun all day, and I have a large swimmer load on a daily basis. If I try to keep mine lower, there's no way to keep up with the chlorine demand without taking a chance on an algae bloom.

Janet

[DavidD]

I like to start out around 30ppm or less as well. This leaves me room to use the inline feeder with pucks supplemented by bleach until I reach 50. I then go straight to bleach.

David

[waterbear]

try and keep mine between 60 and 80 ppm because that is what the manufacturer of my SWG recommends and a call to their tech support line told me that it is recommended at that high a level with a SWG because of the 'superchlorination' that takes place in the cell whenever it is generating chlorine. Don't know how true it is but I do know that when the levels are in that range the pool water sparkles and my FC levels stay pretty constant. I have a leak which the builder has yet to fix and my cya dropped to maybe 20 over a 3 month period and I started having all kinds of problems holding chlorine in the pool once the cya got below about 40 ppm!

[rhosk]

I like to start off with a cya of 30, then I use bleach and pucks during the summer. Starting off with 30 leaves me room to use the pucks for whey I am away and when I need them for stains.

I like to start out around 30ppm or less as well. This leaves me room to use the inline feeder with pucks supplemented by bleach until I reach 50. I then go straight to bleach.

This is my regimen exactly

[JerryZ]

I keep mine at 80-90. I live in a HOT climate, my pool is full sun all day, and I have a large swimmer load on a daily basis. If I try to keep mine lower, there's no way to keep up with the chlorine demand without taking a chance on an algae bloom.

Janet

Ditto. I pull a bucket of pool water, set the Cl level with bleach, and test it during the day. On a moderately high UV day (8), I use 3.5ppm Cl at 80ppm CYA. I then calculate what cell output level is needed for various run times to generate that amount of Cl.