Hi,
I'm about a year into pool ownership and I figured I had it fairly down. However in the past week or so my pH has been causing me a lot of trouble. I just can't keep it lower than the upper 7s.
Latest readings as of this evening:
Cl - 4ppm
pH - 7.7-7.8
TA - 200 (I'll get to this in a second)
CYA - 55-65 (honestly it's hard to tell what is *just* visible with the Taylor 'watch the dot disappear' test)
A bit more background: ~7000gal round, cartridge filtered.
I just replaced filters so the water in the pool is just rocking like its nobodies business. Also it's been getting pretty hot (upper 80s to mid 90s during the day). Other than that all has been about the same.
So the past few evenings I'd come home and the pH would be easily past 8, so I'd dump like a quart of MA into the pool and expect to wake up and see it hovering in the 7.4 range. More often than not it barely dents it or it actually gets worse.
It's probably affecting my ability to keep chlorine in the pool as well but it's not as big of an issue. It doesn't seem to disappear like my MA does.
I last checked the TA around the end of June and it was in the 125ppm range. Not terrible but not that great either. I thought MA was supposed to lower TA but I measured it this evening and its a whopping 190 or 200.
I get my MA from lowes in two gallon boxes and I know I've had a dud chlorine from them in the past (same brand as MA). Is it possible that the MA is just no good? The stuff I have looks right. It's yellowish but it doesn't have a smell. I thought hydrocholoric acid had a smell...maybe I'm wrong.
I *did* have some ph down on hand and I threw about 24oz of that in a few days ago. That seemed to work. It got things down to around 7.3-7.4 for a day or so. What would cause the pH to shoot up so high so quickly?
I've never had trouble with MA until now. I'm just wondering if something has changed and it isn't the acid that I'm using.
Thanks!
-Mark
I'm about a year into pool ownership and I figured I had it fairly down. However in the past week or so my pH has been causing me a lot of trouble. I just can't keep it lower than the upper 7s.
Latest readings as of this evening:
Cl - 4ppm
pH - 7.7-7.8
TA - 200 (I'll get to this in a second)
CYA - 55-65 (honestly it's hard to tell what is *just* visible with the Taylor 'watch the dot disappear' test)
A bit more background: ~7000gal round, cartridge filtered.
I just replaced filters so the water in the pool is just rocking like its nobodies business. Also it's been getting pretty hot (upper 80s to mid 90s during the day). Other than that all has been about the same.
So the past few evenings I'd come home and the pH would be easily past 8, so I'd dump like a quart of MA into the pool and expect to wake up and see it hovering in the 7.4 range. More often than not it barely dents it or it actually gets worse.
It's probably affecting my ability to keep chlorine in the pool as well but it's not as big of an issue. It doesn't seem to disappear like my MA does.
I last checked the TA around the end of June and it was in the 125ppm range. Not terrible but not that great either. I thought MA was supposed to lower TA but I measured it this evening and its a whopping 190 or 200.
I get my MA from lowes in two gallon boxes and I know I've had a dud chlorine from them in the past (same brand as MA). Is it possible that the MA is just no good? The stuff I have looks right. It's yellowish but it doesn't have a smell. I thought hydrocholoric acid had a smell...maybe I'm wrong.
I *did* have some ph down on hand and I threw about 24oz of that in a few days ago. That seemed to work. It got things down to around 7.3-7.4 for a day or so. What would cause the pH to shoot up so high so quickly?
I've never had trouble with MA until now. I'm just wondering if something has changed and it isn't the acid that I'm using.
Thanks!
-Mark