I'm new to this site and also a first time pool owner. After having a really frustrating experience with the local pool stores, I came across this site and decided to take the matters into my own hands. After opening up my pool for the first time this season, the water was cloudy with some visible algae. The CYA level was at 120. I drained 50% of the water and re-filled it from tap.
I have a 20,000 gallon vinyl Non-SWCG in-ground pool. I also purchased the TF-100 test kit.
After the initial re-fill and the SLAM process I got my numbers to:
FC = 4.5
PH = 7.8
TA = 130
CH = 200
CYA = 40
I was able to maintain it for about a week at the appropriate levels, but now that the temperatures are starting to climb up (in the 90s), it seems like I'm losing most of the chlorine over night. I've been trying to bring the FC level to at least a 5. I add 10% liquid chlorine from Walmart based on the pool math calculator numbers, but when I check the levels, the FC hardly makes it to 1.5. I'm also seeing a slight drop in other numbers:
This morning test results:
FC = 1
PH= 7.5
TA = 90
CH = 150
CYA 40
The pool looks great with no signs of algae, so far... What could be causing the chlorine to drop? I'll greatly appreciate any suggestions on how to move forward!
Thanks in advance.
I have a 20,000 gallon vinyl Non-SWCG in-ground pool. I also purchased the TF-100 test kit.
After the initial re-fill and the SLAM process I got my numbers to:
FC = 4.5
PH = 7.8
TA = 130
CH = 200
CYA = 40
I was able to maintain it for about a week at the appropriate levels, but now that the temperatures are starting to climb up (in the 90s), it seems like I'm losing most of the chlorine over night. I've been trying to bring the FC level to at least a 5. I add 10% liquid chlorine from Walmart based on the pool math calculator numbers, but when I check the levels, the FC hardly makes it to 1.5. I'm also seeing a slight drop in other numbers:
This morning test results:
FC = 1
PH= 7.5
TA = 90
CH = 150
CYA 40
The pool looks great with no signs of algae, so far... What could be causing the chlorine to drop? I'll greatly appreciate any suggestions on how to move forward!
Thanks in advance.