CYA >40 (I treat it as if it were 50)
Temp 44 degrees
I am fighting mustard algae, so recently added FC to shock level to hit it hard while the water is cold. I made the mistake of not checking pH before adding the FC, but it last tested 7.8 which is right where I wanted it going into winter. So I'm a little confused as to current reading.
My understanding of pH is that as the water cools and becomes colder, pH naturally rises? Also, my understanding of testing pH while FC is high is that pH may read *higher* than it actually is. I'm really trying to keep a close eye on CSI this winter. Should I be concerned with current pH reading?
Edited to add temp reading