Jwjoh commented6y ago
It could be the lights. I just started week 4 of an 8BK grow with a fan and heatsink cooled 300-watt-equivalent LED setup in a 2x2x5 Secret Jardin DS60, have a 189 CFM fan with a rheostat set all the way to minimum that provides more than enough air flow. Have two plants packed in the tent and even being 2 feet away from the LEDs was too much. I took them off the upside down buckets I had them sitting on top of, and now they are 3.5 feet away from the light which seems great! I'm sure they will be able to handle more light once they grow that high naturally. I also find that 8BK likes temps more down around high 60s / low 70s with lower amounts of humidity! (I have an air conditioner running all day that keeps the room around 69, and I find that the environment inside stays around 71 because of the small amount of heat generated by the LEDs, then I turn on a heater at night, which isn't even kicking on at the moment, to keep it from dropping below 68. Remember, it has lineage that comes from the mountains of Afghanistan and Pakistan, and does fantastic with colder temps and lower humidity than normal, and a little more distance from the light. One of my plants is a weird phenotype, it's growing extremely asymmetrically and "has some personality". The other one is gorgeous and perfectly symmetrical. I'd post a pic to show ya since we're growing the same strain, but there's no option to do that! Anyway, they are pretty stoic plants. If you're sure your pH is fine, I'd get them away from the light and keep them from going above 75 or below 65. (My humidity is pretty low during the day, around 40% because of the air conditioning - but then at night it bumps up to around 60%). Wish I had known about this site before I started this grow, I would've logged it all on here!
Also, buy some CaliMagic... put half a teaspoon in a gallon of distilled water, shake it around, and water with that next time. 8BK always seems SUPER hungry for calcium, magnesium, and iron. I don't know why but my 8BK plants need that way more often than the standard NPK fertilizer.
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