redfishbluefish
Stay Positive, Stay Productive
View Badges
Super Moderator
Ultimate Member
Reef Squad
Excellence Award
Article Contributor
NJRC Member
Hospitality Award
My Tank Thread
Oh my gosh, my pH is almost 8.6!!!

It's a good thing, as a two part doser, that I know that it's impossible for me to get to this pH unless someone dumped something nasty in my tank. I might be able to get there if I dosed kalkwasser and overdosed or dosed too fast, but otherwise, it's highly unlikely.
So I pulled the probe out and gently brushed off the few strands of hair algae, washed with RO/DI, and recalibrated using pH 7 and pH 10 standards. And now this is more in line with what I'd expect with lights out and closed up house in the winter:

If it still didn't look right or was sluggish, I'd soak the probe in some vinegar overnight and recalibrate.

It's a good thing, as a two part doser, that I know that it's impossible for me to get to this pH unless someone dumped something nasty in my tank. I might be able to get there if I dosed kalkwasser and overdosed or dosed too fast, but otherwise, it's highly unlikely.
So I pulled the probe out and gently brushed off the few strands of hair algae, washed with RO/DI, and recalibrated using pH 7 and pH 10 standards. And now this is more in line with what I'd expect with lights out and closed up house in the winter:

If it still didn't look right or was sluggish, I'd soak the probe in some vinegar overnight and recalibrate.