I started all seeds in an organic rapid rooter. I have a mixed opinion about doing so. It grows and feeds seedlings without nutrients. Although, I added nutrients(11/20) to reservoir to aid in growth. I don’t use rock wool because of environmental concerns and toxicity to plants if not cleaned properly. I am growing 8 at a time due to undetermined sex. I placed all 8 rooter cubes inside the same reservoir for ease and lack of equipment. I made a slight error in measuring out nutrients(decimals are extremely important in the metric system lol) . Luckily enough I didn’t damage my seedlings. My PPM was extremely high (5000+ high what a waste).
I have small yellow spots on leaves. I want to say it starts at tips and travels down. I moved light away and it seemingly gotten better. I moved tents for bigger space and it might have returned.
Your nutrients are to high. Cut them in half. Hydro gives the roots direct access to nutrients so at full dose the plant will start getting nutrient burn.
Also you don't want light to get into your buckets, Any light leaks will lead to root rot. Raise the pebbles above the holes.
check out this diary for how much nutrients should be used in veg.
growdiaries.com/diaries/86068-barney-039-s-farm-utopia-haze-grow-journal-by-chow-13/week/445013
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