Recent content by growumbo

I was thinking it's caused by a lower pH as well

That looks like a nitrogen and/or iron deficiency caused by a pH lockout. Try flushing plants with controlled ph'd water and getting a runoff to sample what the soil's pH is.

Nice pics! Those look like thrips in their adult stage. I usually have issues with them while they're larvae. Most don't survive but it seems like it takes a few to start the next gen. I usually use organic certified potassium salt or spinosade insecticide and diatomaceous earth. The d. Earth...

Do they easily come off the leaf or are they stuck on? The black spots look similar to sap marks left behind by thrips or spider mites that bite individual cells. I'm not used to looking at those under macro so can't say for sure. Aphids leave similar but larger black tarry like spots on the...