pH creeping down

[Maer]

My pH on some plants is 6.0-6.1 it has been creeping down a 10th of a point over the past month. The plants had 1/4 cup per gallon of dolomite lime, but for many stupid reasons they were vegging for 4 months. So my thought is that the dolomite has run out.

I am in 3 gallon smart pots, so I am thinking of top dressing with 3/4 cup of dolomite. Is this too much? Bad idea? Please advise.

 

[Droopy Dog]

Yep, lime does run out, or gets consumed actually, so the top dress is a good idea.

3/4 cup might be a bit much in a 3 gal pot. I'd do a light 1/2. You can always add more.

DD

 

[Maer]

Thank you sir

 

[Be Irie]

3/4 cup seems like a bit much to me but since it is dolomite, the PH won't go above 7... I would think a TBLS or two into a gallon of water or scratched in would do you right...

 

[Dankafied Rob]

Lime....