Yellowing spotted upper leaves only

[RoostaPhish]

I only use RO water. I run on blumats too.

Soil was tested via Logan and someone helped adjust so I had correct saturation.
This girls a heavy feeder I think that's all. Its my first full round in this soil , so just figuring out top dressing and all . Haven't needed much though. I have a plant next to it that this never happened to . It's a week or so from harvest. I have a clone of this plant so I can run her again (not to mention flip earlier . She's way too tall for my tent )

I get what you are saying, but it is ridiculously easy to do. And I would still do it. Whenever I see issues like this, it is the first thing I check.

 

[TanzanianMagic]

Used Gaia bloom instead of my individual amendments. (Half strength last top dress obviously needed to go the full 1 tbl per gal)

Tea was TM7 , molasses. Ecw

Soil is spm, ecw, perlite, boos biodynamic compost.
Kelp. Crab meal. Fish bone meal, neem cake. dolo lime , seabird guano, humic acid powder, gypsum, azomite greensand, alfalfa.

I think the molasses and earth worm castings tea pushed it over the edge.

How long did you let the soil rest after mixing the nutrients in?

Also, depending on your water source, you may also just let the chloride evaporate for a day or so at room temperature, instead of using reverse osmosis water.

About Gaia Green Bloom, TheGrowDepo ca states:

What is in Gaia Green Bloom?
Fishbone meal, bone meal, glacial rock dust, mined potassium sulphate, fossilized carbon complex, rock phosphate, greensand, kelp meal, gypsum, bat guano. Applications: Gaia Green Power Bloom 2-8-4 is an excellent fertilizer for flowering and root development.

Also, about the sick plant, I would flush the medium, and then feed it with a little nitrogen. And let the plant grow out of it.