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Medium is roughly 40/40/10/10 peat/compost&manure/perlite/vermiculite with ample lime
Recently increased to 20ml/gal earth juice bloom, feeding with each watering
The 3 plants pictured with the leaf yellowing are lavendar clones .. 2 other cuts from the same mom are in this room as well and they aren't yellowing in this way
Your not giving them any N. Give em a shot of Grow. Pinch the yellow leaves off they are dead and not coming back. This will also let you know if the problem is getting worse...cuz it will be easier to tell if more yellowing is occuring. EJ is pretty damn acidic...do ya bubble it for 24-72hrs before ya use it?
I'm with rcky with one exception - I'd leave the yellowing leaves on until they fall off. The plant is still using their stored N and though they will probably die, it's usually a good idea to wait until the lady tells you she's ready to let them go vs just pulling them.
Other than that, it's a N def for sure...so get some nutrients with N, any soil Grow nute.
last night I realized that the EJ bloom doesn't have any N (soil/less newb, first run) I gave them a light shot of the EJ grow along with some bloom. They have been flowering for 3 weeks so they must have used up all the N that was left in the mix.
EJ can be super acidic but the plants don't seem to mind. I try and mix the nutes with water at least a day beforehand, shake them up and leave the cap off, but sometimes I mix it immediately before feeding. I have several strains in the same room and they seem to like it despite the low pH.