I have had pool for 6 years - using chlorine tabs and struggling with CYA levels and algae growth. I just tried switching to liquid chlorine - and I was surprised how fast it leaves the pool. I have a 23K gal pool ... and with 0 ppm FC chlorine and total chlorine of 0(and CYA level of about 70) ... I put in 1 1/2 gal of 10.2% concentration chlorine (it was evening time). The next morning (12 hrs later) I tested (with taylor test kit) ... and had 8.5ppm chlorine. That evening - I tested again ... and the chlorine level was 0. Is this how much liquid chlorine has to go in the pool on a daily basis?
In summary - started out with:
TC = 0
FC = 0
Calcium = 230
CYA = 70
Again - in summary - in the evening - I added 1 1/2 gallons chlorine at 10.2% concentration - and tested the next morning early at 8.5 chlorine
12 hours later - I had 0 chlorine (it was mainly a sunny day).
I thought with the level of CYA (70)- that the chlorine would "stay" in the water... but apparently not. Am I missing something?
1st time on forum.