Hi all,
Hoping I can get some insight into my plaster - pool is about 2 months old. It's an NPT Microfusion Stonescapes White plaster.
I have been religiously using the TF100 kit since day 1, and managing Ph to below 8 every day (it goes down to 7.6 and then raises to 8.0 or 8.1, and I add a cup of acid again each morning), the TA to 70-90 (just lowered it to 70), CH to 325-350 and the CSI/LSI to -.3/+.3 (it has been hanging around 0 recently. FC has been 9-10.5 as I've been learning my salt cell and wanting to keep SWG % higher as summer comes along.. I figured I would dial in FC over time to be sitting in the 8-10 range.
This mornings results (also my PoolMath logs are available)
FC 9
CYA 70
PH 7.6
TA 70
CH 350
Salt 3600
CSI -.3
So,
We had noticed some discoloration on the bottom near the side after it was plastered but didnt' think anything of it. One day my wife noticed more in a small strip between wall and main drain, and we asked the PB. He sent the plasterer, who looked at it, pointed out a few more spots that are running underneath the sidewall fountain intakes and the sidewall vacuum port. He did not think it was a curing issue as he said problems with plaster tend to be either in big blotches or more uniform and this was too small and too random. He tested with piping acid down a pole with a circular funnel on the end to the spots and nothing happened to it. He said it was a "chemical" issue and he would talk to the PB.
So back to the PB - who came out, looked at it again, and this morning informed me that he had taken a water sample to his service manager, and this was the response.
>>>>>>>
Acid over 8. Like 8.2. Ph should be orange when test. At 7.4. This is why has scale on his plaster. Also should use a product like beautec weekly to keep scale down in water for plaster and equipment because salt pool.
Alkalinity is 60. Combine low alkalinity, high chlorine and high ph. Will quickly deteriorate plaster and especially ruin the heater.
Chlorine. Is at a 10 ppm. This is way off the chart. Needs to be at 3pm
This combination will definitely cause the scaling you are seeing. And will cause damage to heater and plaster if not fixed. Scaling can be cleared with lower ph and a scaling product ( we use Beutec) combined with a lot of brushing.
This is why salt is rarely used anymore. This was one of the big issues.
>>>>>>>>
I politely responded that Ph was high because FC was high, and I was managing Ph, and that I didn't see how it could be scale as I was managing the Ph/TA/CH to get a CSI of neutral. Also, this is not white flakes, or white crystals growing on the plaster.
The PB owner essentially threw up his hands and said "I'm not the chemical person" and to talk to his service manager, who I am due to talk to later today or tomorrow.
I would appreciate any thoughts or insights anyone might have into the pictures attached and to formulate an argument to a service manager who seems to have blamed a salt cell immediately. sigh...
thanks in advance
B
Hoping I can get some insight into my plaster - pool is about 2 months old. It's an NPT Microfusion Stonescapes White plaster.
I have been religiously using the TF100 kit since day 1, and managing Ph to below 8 every day (it goes down to 7.6 and then raises to 8.0 or 8.1, and I add a cup of acid again each morning), the TA to 70-90 (just lowered it to 70), CH to 325-350 and the CSI/LSI to -.3/+.3 (it has been hanging around 0 recently. FC has been 9-10.5 as I've been learning my salt cell and wanting to keep SWG % higher as summer comes along.. I figured I would dial in FC over time to be sitting in the 8-10 range.
This mornings results (also my PoolMath logs are available)
FC 9
CYA 70
PH 7.6
TA 70
CH 350
Salt 3600
CSI -.3
So,
We had noticed some discoloration on the bottom near the side after it was plastered but didnt' think anything of it. One day my wife noticed more in a small strip between wall and main drain, and we asked the PB. He sent the plasterer, who looked at it, pointed out a few more spots that are running underneath the sidewall fountain intakes and the sidewall vacuum port. He did not think it was a curing issue as he said problems with plaster tend to be either in big blotches or more uniform and this was too small and too random. He tested with piping acid down a pole with a circular funnel on the end to the spots and nothing happened to it. He said it was a "chemical" issue and he would talk to the PB.
So back to the PB - who came out, looked at it again, and this morning informed me that he had taken a water sample to his service manager, and this was the response.
>>>>>>>
Acid over 8. Like 8.2. Ph should be orange when test. At 7.4. This is why has scale on his plaster. Also should use a product like beautec weekly to keep scale down in water for plaster and equipment because salt pool.
Alkalinity is 60. Combine low alkalinity, high chlorine and high ph. Will quickly deteriorate plaster and especially ruin the heater.
Chlorine. Is at a 10 ppm. This is way off the chart. Needs to be at 3pm
This combination will definitely cause the scaling you are seeing. And will cause damage to heater and plaster if not fixed. Scaling can be cleared with lower ph and a scaling product ( we use Beutec) combined with a lot of brushing.
This is why salt is rarely used anymore. This was one of the big issues.
>>>>>>>>
I politely responded that Ph was high because FC was high, and I was managing Ph, and that I didn't see how it could be scale as I was managing the Ph/TA/CH to get a CSI of neutral. Also, this is not white flakes, or white crystals growing on the plaster.
The PB owner essentially threw up his hands and said "I'm not the chemical person" and to talk to his service manager, who I am due to talk to later today or tomorrow.
I would appreciate any thoughts or insights anyone might have into the pictures attached and to formulate an argument to a service manager who seems to have blamed a salt cell immediately. sigh...
thanks in advance
B
