Does anyone know what's up here? My plants have turned a very dark green, and started producing single fan leaves. They're a little brittle, and slightly curl at the tips. I'm doing indoor, with two 1000 watt lights, not too warm (plants about 2.5 feet from lights), great vent + great fan, good soil, water 3x's week + fertalize with 7-4-10. They are clones that have been with me for about one month. I've just changed my hours from 18 to 12. I'm growing orange crush and chocolate thai.

maybe too much water... water when the top of the soil is dry to the touch

ya you got fucked thats not pot find a friend with good seeds dont believe that crap you see in high times or on the internet its not the seed its how it is grown hands down rule 1

Sometimes marijuana that turns really dark green is a sign of too much Nitrogen. Your fert numbers are little off also.Veg should be N highest not the K.And if your going into flowering its time to have the P highest. What fert are you using? Invest in a moisture meter so you can also be sure your not watering to much.

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excuse me but don't act like a know it all, ALL marijuana starts out with single leaves, then it turns to 3 leaves per set, then 5 and 7

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wow..I just realized how old those 2 first posts are after I posted my comment, why did that first guy go back so far to find this topic?

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complete the diet. Man cannot live on water alone. Your success will improve when you understand that 16 elements are essential for plant growth.

my plants did this 2 weeks ago. They went from 9 leaves to 5 to 3 to one. I think it was too much nitrogen. I flushed and reintroduced nutes and two weeks later they are back to normal from one leaf to 3 to 5 and so on... I am pretty sure it was too much nitrogen around that time I also sprinkled diatomaceous earth on the soil for gnat control so my plants just could have been streesed from that too.

Just realised how old the post is!