xtsho
Well-Known Member
Soil runoff pH doesn't matter because it's not an accurate representation of pH at the root zone and the factors that control it. Input pH can matter if that input is way out of line like a very high pH water source.
For coco the only pH that matters is what goes in.
The reason some of us say stop worrying about pH is because many times a grower has plants that are healthy with nothing wrong. Then they check the runoff, think it's out of range, and then start running extreme pH levels through their grow medium to get the runoff to match some number they think it should be. They're trying to fix a problem that isn't there. Or you have those with those cheap $8 soil pH meters that are worthless and should be tossed in the trash.
I don't pH when growing in soil. In fact I use water straight from the tap still containing chlorine and chloramine and the water here is treated to be 8.2 but can range from 7.4 - 8.4. My soil plants grow just fine. I do pH the nutrient solution when growing in coco. But only when I mix it up. I've never once checked runoff pH in my decades of growing because it's not an accurate measurement and as long as you take care of what goes in you're fine. The only time I've ever bothered with testing soil pH in my life is outside in the vegetable garden using slurry tests which is the proper method to use. I also test the soil around my blueberries so I know if I need to adjust the pH because Blueberries are acid loving plants.
For coco the only pH that matters is what goes in.
The reason some of us say stop worrying about pH is because many times a grower has plants that are healthy with nothing wrong. Then they check the runoff, think it's out of range, and then start running extreme pH levels through their grow medium to get the runoff to match some number they think it should be. They're trying to fix a problem that isn't there. Or you have those with those cheap $8 soil pH meters that are worthless and should be tossed in the trash.
I don't pH when growing in soil. In fact I use water straight from the tap still containing chlorine and chloramine and the water here is treated to be 8.2 but can range from 7.4 - 8.4. My soil plants grow just fine. I do pH the nutrient solution when growing in coco. But only when I mix it up. I've never once checked runoff pH in my decades of growing because it's not an accurate measurement and as long as you take care of what goes in you're fine. The only time I've ever bothered with testing soil pH in my life is outside in the vegetable garden using slurry tests which is the proper method to use. I also test the soil around my blueberries so I know if I need to adjust the pH because Blueberries are acid loving plants.