I have had this 15' by 52" (5000 gal) steel above ground pool (overlap liner) for about 3 years. This is my 4th spring start.
All the prior years my CYA would be zero starting out in spring. Winterizing routine is a cheap winter cover and lower water below return. I usually use liquid chlorine to slam level when I close for the winter. In the Spring chlorine is zero.
My CYA is 50. I have tested it multiple times. I even bought the refill kit to ensure it was not wrong. I also filled my tube with just pool water. Totally clear.
The reason I asked is I am battling green alage. I was slamming but I was treating CYA as zero. Obviously now I know it's supposed to be slammed with 50 cya.
Simple question why this year is cya still around?
All the prior years my CYA would be zero starting out in spring. Winterizing routine is a cheap winter cover and lower water below return. I usually use liquid chlorine to slam level when I close for the winter. In the Spring chlorine is zero.
My CYA is 50. I have tested it multiple times. I even bought the refill kit to ensure it was not wrong. I also filled my tube with just pool water. Totally clear.
The reason I asked is I am battling green alage. I was slamming but I was treating CYA as zero. Obviously now I know it's supposed to be slammed with 50 cya.
Simple question why this year is cya still around?
