Hi all, I posted in another thread from 5 yrs ago and was advised to start a new one. I turned to the BBB method last year, after my CYA levels went through the roof from the "pool store" methods.
In any event, I opened the pool this year (despite closing at mustard algae shock level and draining the water 30% down) to wacky readings (eg low TA but high pH). One more thing to note is that I opened to a green algae bloom and likely some residual mustard algae.
PH 8.2+ (9 per pool store, rich magenta color beyond scale of my Taylor test)
TC 1.5 (I just added enough 12.5% bleach to bring to 17 FC for mustard shock level)
TA 60 (70 per pool store)
CH 175 (140 per pool store)
I'm wasn't sure what to do first as I have no idea what my real PH is. The pool store suggested bringing my alkalinity up first, and then adding acid, and finally calcium hardness. They warned not to put the hardness increaser in at the same time as soda ash or the alkalinity up.
I am using baking soda, muriatic acid (using home depot Kleane Strip Green @ 20% HCL), and BJs ice melt (99% calcium chloride) instead of the pool store products.
I spent the better part of today scrubbing, and did just add about 40 lbs of ice melt and just finished shocking again to 17 FC.
Would appreciate any advice on whether or not I really have a pH and TA issue.