Might be changing in temperature giving you a different reading, 25° is optimal temp to check ph, 25+ starts to read low, 25 and less should read higher, takes a decent temp change to really effect it tho, like 5°c so is your intake water different temp as res?
You need to be around 5.8-6.1 for hydro anyways.... sounds like a good thing. Lol!
The reservoir sits at around 21(+/-2), I try to maintain this temp as I'm led to believe that at higher temps the DO levels get lower
Interesting.... This is the first I’ve ever heard this.
When calibrating my ph pen, the manufacturer of the ph fluid recomends the fluid be at 25°.When I let the fluid cool down and check again, the pen shows a 0.2° difference.
Where do you get your water from, is it hard water,what ph does it start at?
I'm using rain water with pH of 6.5
Cool, i live in a hard water area and that makes my ph unstable,it raises first then drops like yours. I found it was reacting with the formula I was using, if I reduced the amount of mycrorize I used it became more stable.
Never tested ppm of my nutes, 1. Don't have a meter, 2. Change nutes weekly so don't feel the need
Are you checking ph after nutes added? Thats key broski
Yeah mate, usually check morning and nite, top up with water etc if required.
