SoCalBoo
05-17-2006, 04:47 PM
I have been struggling to get a mustard algae bloom under control, but everything seems okay now. Thank you to many on the forum who helped with their sage advice.
Now on to the next issue of importance - high Ph, SWG and plummeting TA. For reference, I have a 22,500 IG plaster/guinte pool with autopilot SWG with the 40k gallon rated cell.
1. To maintain my Ph around 7.4 to 7.6, I am having to add at least a pint of muriatic acid a day, sometimes more. It has been that way since we opened the pool last september. I know and understand that an SWG tends to cause the Ph to rise. I have also heard that plaster can cause a greater acid demand.
But it just seems like there is a HUGE demand. Maybe adding a pint a day isn't a big deal. So just looking for someone to make me feel better :D about it, or let me know something else might be going on :eek: .
2. As well, the TA crawls down, and I have been adding a 4 lb box of Baking Soda about every 2 weeks or so when it gets down to 80, which then causes it to go back up to 110-120 range. Again, don't mind doing this, but just seems like a high frequency of adding Baking Soda?
3. A little off subject, but I noted that the autopilot manual says that desireable CYA is 60-80. This seems high. Is it? I would rather have it lower and not have to have to maintain the higher levels of Ch to maintain proper sanitization, much less the higher levels for superchlorination. Anyone have any thoughts on this? Admittedly, I am relying on my local pool store for my CYA level of 40 (see below).
For reference, here are my most recent drop test kit results:
FC - about 5ppm (my kit stops at 3ppm, this is best guess using CarlD's advice and diluting with distilled water)...on it's way down to 3 or so from superchlorinating with bleach
CC - not measurable
FC - about 5ppm (see FC above)
TA - 110 (added 4 lb box of baking soda 2 days ago, it was 80 before adding)
CYA - don't know...waiting for Ben's kit to arrive. about 3 or 4 weeks ago, pool store said 40
Salt - about 3 or 4 weeks ago, pool store said 2700.
Cal - don't know...waiting Ben's kit to arrive.
Any help, as always, is greatly appreciated.
Now on to the next issue of importance - high Ph, SWG and plummeting TA. For reference, I have a 22,500 IG plaster/guinte pool with autopilot SWG with the 40k gallon rated cell.
1. To maintain my Ph around 7.4 to 7.6, I am having to add at least a pint of muriatic acid a day, sometimes more. It has been that way since we opened the pool last september. I know and understand that an SWG tends to cause the Ph to rise. I have also heard that plaster can cause a greater acid demand.
But it just seems like there is a HUGE demand. Maybe adding a pint a day isn't a big deal. So just looking for someone to make me feel better :D about it, or let me know something else might be going on :eek: .
2. As well, the TA crawls down, and I have been adding a 4 lb box of Baking Soda about every 2 weeks or so when it gets down to 80, which then causes it to go back up to 110-120 range. Again, don't mind doing this, but just seems like a high frequency of adding Baking Soda?
3. A little off subject, but I noted that the autopilot manual says that desireable CYA is 60-80. This seems high. Is it? I would rather have it lower and not have to have to maintain the higher levels of Ch to maintain proper sanitization, much less the higher levels for superchlorination. Anyone have any thoughts on this? Admittedly, I am relying on my local pool store for my CYA level of 40 (see below).
For reference, here are my most recent drop test kit results:
FC - about 5ppm (my kit stops at 3ppm, this is best guess using CarlD's advice and diluting with distilled water)...on it's way down to 3 or so from superchlorinating with bleach
CC - not measurable
FC - about 5ppm (see FC above)
TA - 110 (added 4 lb box of baking soda 2 days ago, it was 80 before adding)
CYA - don't know...waiting for Ben's kit to arrive. about 3 or 4 weeks ago, pool store said 40
Salt - about 3 or 4 weeks ago, pool store said 2700.
Cal - don't know...waiting Ben's kit to arrive.
Any help, as always, is greatly appreciated.