For some reason I'm having a problem understanding this relationship. When you take promix, or coco and check the ph they come out 5.6 to 6.0. That's measuring by taking a cup of medium, filling with water (tap water at 8.0) and let set for an hour. Drain off and stick ph meter in.

Based on this, what is the use of measuring medium ph? If one hand waters with 6.5 nutrient solution the runoff will most certainly be lower than 6.5.

I guess I'm trying to understand if the ph of the medium and the ph of nutrient solution are independent of each other.

Promix is used all over the place commercially and growers really like it. So what am I missing here?
grey1223 Reviewed by grey1223 on . Medium ph vs nutrient ph?????? For some reason I'm having a problem understanding this relationship. When you take promix, or coco and check the ph they come out 5.6 to 6.0. That's measuring by taking a cup of medium, filling with water (tap water at 8.0) and let set for an hour. Drain off and stick ph meter in. Based on this, what is the use of measuring medium ph? If one hand waters with 6.5 nutrient solution the runoff will most certainly be lower than 6.5. I guess I'm trying to understand if the ph of the Rating: 5