High CYA, low TA, what first?

[Rodex]

Seeing green is all the reason you need to SLAM

Adding bleach temporarily raises the pH, so for your SLAM, an important step is to lower the pH before the first big addition of FC. I like to lower it to 7.2 myself, before starting a SLAM. The TFPC range is 7.2 to 7.5 before starting.

Ok, thanks, I’ll go ahead and SLAM.