- Jun 8, 2020
- 18
- Pool Size
- 14500
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45 Plus
Hello everyone,
I’ve owned my plaster pool for 26 years now and this has been my worst season ever getting things set correctly. I live in Maryland and uncovered in mid-May, late for us as it was rainy and cold. I heat with a solar cover so I need good sunny days but the pool only gets about 6 hours of direct sunlight a day.
Up to a week ago, I used Trichloro 90% tablets but have now stopped and converted to 12.5% liquid chlorine exclusively.
So, about 2 weeks ago, according to the pool store, my TA (221) and CYA (151) were way off and I started with adjusting the TA using muriatic acid and aeration. I then moved on to the CYA and drained about 40% of my water and refilled.
I had ordered a TFT100 test kit which arrived on 6/29 and I’ve included all the tests I’ve taken to date. I know the CYA is still high but having dumped about 40% last week and refilling with cold water, it came down but we are approaching our hot season here and I’d like to use the pool and another 40% drain and refill will kill my water temp. Besides, we will get plenty of rain in the next few weeks so I will undoubtedly be pumping it down.
6/29
pH 6.9
FC 1.0
CC 1.5
TA 100
CYA 110 (reading taken after draining about 30% so I drained a bit more)
6/30
pH 7.2
FC 1.5
CC 1.0
CH 400
TA 100
CYA 87
I threw in a couple bags of Power Power Plus 73 to add Cl and bring up the CH, however the next day:
7/3
pH 7.1
FC 0.5
CC 1.0
CH 500
TA 90
CYA 85
After this reading, I did a small “slam” not wanting to over chlorinate the pool because we want to use it on the fourth. So, I dumped in 2 gallons of LC, with the pump running and took a reading a couple hours later. The pool was in complete shade during this time. I got:
FC 16
CC 1.0
I waited 4 more hours and measured again:
FC 8.5
CC 3.0
This morning, 12 hours later, I did a full test:
7/4
pH 7.0
FC 2.0
CC 1.0
CH 525
TA 90
CYA 92
So the TA is still a bit high as is the CYA while the pH is low but I’ll aerate it to bring it up. My question is, where is my chlorine going? I appreciate your help and thanks in advance.
Gary
I’ve owned my plaster pool for 26 years now and this has been my worst season ever getting things set correctly. I live in Maryland and uncovered in mid-May, late for us as it was rainy and cold. I heat with a solar cover so I need good sunny days but the pool only gets about 6 hours of direct sunlight a day.
Up to a week ago, I used Trichloro 90% tablets but have now stopped and converted to 12.5% liquid chlorine exclusively.
So, about 2 weeks ago, according to the pool store, my TA (221) and CYA (151) were way off and I started with adjusting the TA using muriatic acid and aeration. I then moved on to the CYA and drained about 40% of my water and refilled.
I had ordered a TFT100 test kit which arrived on 6/29 and I’ve included all the tests I’ve taken to date. I know the CYA is still high but having dumped about 40% last week and refilling with cold water, it came down but we are approaching our hot season here and I’d like to use the pool and another 40% drain and refill will kill my water temp. Besides, we will get plenty of rain in the next few weeks so I will undoubtedly be pumping it down.
6/29
pH 6.9
FC 1.0
CC 1.5
TA 100
CYA 110 (reading taken after draining about 30% so I drained a bit more)
6/30
pH 7.2
FC 1.5
CC 1.0
CH 400
TA 100
CYA 87
I threw in a couple bags of Power Power Plus 73 to add Cl and bring up the CH, however the next day:
7/3
pH 7.1
FC 0.5
CC 1.0
CH 500
TA 90
CYA 85
After this reading, I did a small “slam” not wanting to over chlorinate the pool because we want to use it on the fourth. So, I dumped in 2 gallons of LC, with the pump running and took a reading a couple hours later. The pool was in complete shade during this time. I got:
FC 16
CC 1.0
I waited 4 more hours and measured again:
FC 8.5
CC 3.0
This morning, 12 hours later, I did a full test:
7/4
pH 7.0
FC 2.0
CC 1.0
CH 525
TA 90
CYA 92
So the TA is still a bit high as is the CYA while the pH is low but I’ll aerate it to bring it up. My question is, where is my chlorine going? I appreciate your help and thanks in advance.
Gary