Originally Posted by brianf40us
what is making this to go up tho. about a month ago my tank was staying a constant 8.3 - 8.4.
Could it be this bucket of salt mix?
Have you changed salt mix? Different brand?
I have been doing 5 gallon water changes everyday for my QT that i am currently medicating. Could it be the frequent water changes?
Could be. Are you letting the new salt water sit for a day or so before adding? If not, and it's freshly made, the pH will by higher than it normally would. And if you're changing water every day, it might never have a chance to drop down.
Also could be some type of false reading from your meds? Just thinking out loud...
Either way, 8.6 isn't the end of the world. Probably a little high for my taste, but it is what it is - trying to manipulate it in a QT would probably just be asking for trouble.
And yeah... as AMD mentioned, pH is normally highest in the evening just before the lights go out and lowest in the morning, just before the lights come on.