help with first results of the season, ps234

[vinouspleasure]

thanks for all the great info! its a gunite pool, so I definitely need cal. also, my cya is 40 not 45...the actual reading was 38 but I rounded it off.

thanks again,
jd

[waterbear]

thanks for all the great info! its a gunite pool, so I definitely need cal. also, my cya is 40 not 45...the actual reading was 38 but I rounded it off.

thanks again,
jd

It's not possible to get a CYA reading of 38 with the PS234. Just call it a bit below 40. Your CYA is fine where it is. Shocking to 15 ppm is still fine.
As far as refills, if your DPD powder is only grey it's probably still good. The titrant is the one to worry about. If it is NOT clear but has any kind of color (like pinkish or orange) then it is bad and needs to be replaced. You can order refills from Taylor Technologies or from TF Test Kits.

[aylad]

How does your water look?

Janet

[vinouspleasure]

the water was very cloudy to start but I've been shocking the pool and now its clear but not crystal clear. I was using pool shock rather than chlorine since its a little more convenient and I had some leftover from last year.

the bleach calculator says I need about 7 gallons of bleach to reach 15ppm. I typically shock the pool once a week after heavy use or heavy rainfall, so thats a lot of bleach to keep on hand. I guess I've seen a split of opinion in these forums on whether one needs to shock regularly if the chlorine readings stay in acceptable range.

[Watermom]

Unless you have a CC reading over 0.5, you shouldn't need to shock. It isn't hard to keep your chlorine level between 3-6 if you just are diligent about testing and adding bleach. I very seldom have to shock my pool because I very consistenly maintain my chlorine levels.

[waterbear]

If your CC is less than .5 ppm you do NOT need to shock. Most people do NOT need to shock weekly. Remember, shock is a verb, not a noun. It a procedure, not a product.