Billy the Mountain
Well-Known Member
Yellow with a hint of red is 6
Bright red is < 5!
This chart seems good for GH drops, at least on my monitor.
Guys please can this be a pH problem
- Thread starter NobleKingSolomon
- Start date
Bright red is < 5!
This chart seems good for GH drops, at least on my monitor.
obijohn
Well-Known Member
Oh hell no!
I adjust with PH up from that point until it's a yellowish-green
Billy the Mountain
Well-Known Member
Wow, is it well water that has such a low pH?Oh hell no!
Drinkable water is 6.5-8.5.
rkymtnman
Well-Known Member
mine has a bit of blood in it every morning. is that good?
obijohn
Well-Known Member
You misunderstand (or I'm not wording thigs right). My water out of the tap is 7-8, but for just watering the soil buffers it so I don't adjust.
I use FF Tiger Bloom during flowering, that's why it tests red.I then use PH Up to get it into the 6-7 range before feeding
PopAndSonGrows
Well-Known Member
Actually they can "go bad", my drops were reading more than 1 full point off against a calibrated meter. I think the liquid gets oxidized over time, or I may have unknowingly cross contaminated my drops and ruined them
Billy the Mountain
Well-Known Member
I don't think that's typical.
I have a bottle that's at least 5 years old and it still works the same.
PopAndSonGrows
Well-Known Member
Have you compared them against a calibrated meter or any other pH checking method? Just curious. And yeah I agree it's not typical but it can happen, and I am VERY VERY careful about not sticking utensils into bottles i ALWAYS pour out into something.
Billy the Mountain
Well-Known Member
Yes, both a freshly calibrated Apera pH60 and directly with pH 7.0 calibration solution.
Actually, my nearly-empty bottle is only about two years old, not five (thanks Amazon!); maybe it does change over time?
I used bromothymol blue in college chem labs, the bottles looked older than me, I assumed it never goes bad, but have no idea.
Bud man 43
Well-Known Member
I am curious- how do they work when the nutrients have added colors of their own-?
Plain water -yes but the myco I add is black/grey plus all the other stuff.
PH has to be checked after everything is added- before feeding
Billy the Mountain
Well-Known Member
Color doesn't really matter once it's placed in a vial.
I used FloraNova for a while, and it's the color of dark tea in a bucket.
It was barely noticeable in a small vial, and didn't interfere with the pH drops.