Emilya Green
Well-Known Member
If you adjust pH of your incoming fluids to the 6.2 of the buffer, then the nutes will just sit there. They will not break out of their salt bonds and they will not be available to the plant. You could give twice the recommended dosage, and still the plants would not see any of those nutes that are designed to become mobile in the 5.5-6.1 range. Adjust to 5.8 or lower ... all the way down to 5.5 if you like, every time, and let that buffered medium drift your pH right through the entire usable range.Hi @Hdinkleman, @Emilya,
Sorry to bother again guys, but after I’ve changed the ph to 5.8 the plants started having more problems. The first 4 pictures are from an Blueberry auto that is in the same medium and I switched the ph to 5.8 from 6.5. It started getting some spots. The images with the yellow leaves are from the Super skunk above. Do you have any ideas guys? Shall I up or down the ph, maybe up it to 6.2? This is the buffer of the medium.
Blueberry auto
Super Skunk
As far as your spotting problem goes, I know it is easy to assume that this is because of your adventures in pH swings, but I think it looks more like a common magnesium deficiency. The yellowing is due to starvation and your pH problems, but those rust colored spots are magnesium. Get some calmag in there and get your pH stabilized.