If there are red/black dots on the underleaf its spidermites and you will need miticide, sprayed on the plants and everywhere else within 30 ft of the grow room. The rust colour is nute burn.
You have a major issue here bro and its a root system problem affecting new growth. Not sure how to fix it, also what temps are you running, can you put up more info please.
When you water only wet them about 50%, not drenched. Dip the corner of the cube in a bucket of water or use a large syringe with a measured amount if your a beginner.
They are over watered chippie simple as that son. The main reasons are the medium and the very weak cfls you have going keeping temps too cool for the medium to dry , get a mh and reduce watering.
Greenthumb is the only one with this strain, rumour has it that it cost him $25000 for one clone of Neville's cut. The prices are a rip off if your only growing form seeds but he knows people will pay it . The seeds i got were very reliable fem seeds with a slight variation in the phenos. I...
Well keep growing average plants if you dont want to buy the seeds. I really cant see how its such and issue $200 if you can produce thousands of clones from the seeds :dunce:
Its K def or the strain is off and you need a new strain.
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Nutrient deficiency: Potassium (K)
23 07 2010
Summary
Potassium is present throughout plants and is required for all...
As far as i know Greenthumb's is the only real G13 and is the same G13 in the pics grown by DoubleD in a DWC system. I have spoken to the doc and he says it grows best with DWC and vertical HPS lighting. I just use coco and get great results .