Howdy all! Longtime lurker, first time poster. We just moved into a home with a pool and I have been getting back into the swing of things...it has been 20 years since I have had to take care of a pool!
So after a lot of back and forth I have my levels just about right (need to lower CYA a little more, TA is a little on the high side but pH seems to be pretty stable). Full numbers from yesterday:
Water is crystal clear...odd green tinted stains/splotches that will not brush off around the pool. Bright white circle around the main drains. And one self-induced rust stain...because I am stupid.
To the questions!
Q1) I did the overnight test last night (9pm) and this morning (6am) with the following result:
FC: 7.4 - 5.8 (delta -1.6)
Per the Pool School, since I lost 1.6 FC overnight I need to SLAM it, correct? If the greenish splotches are algae related is it safe to assume the SLAMing would help remove them? I am aware it could be any numbers of things.
Q2) Is there some secret to reading the Taylor pH tester that comes with the TF-100? Either I cannot distinguish between the shades (which I have always had trouble with) or something is messed up. It always seems to read the 8.0 level. By comparison, my ColorQ seems to be pretty accurate with pH, regularly at 7.6-7.7 and dropping to 7.5 when I add MA. Should I just use the ColorQ as my pH tester and forget the Taylor kit? Any opinions on the Myron-L Ultrapen PT2 for pH testing?
Thanks in advance! This site is amazing! I wish I had this 20 years ago when I knew the pool stores were screwing us but didn't know why!