strange looking buddha autos

hi riu nation , im onto my 3rd grow now and have decided to try autos from buddha 2 packs of 10 mixed pips. they are now 4 weeks old the tallest one been 40cm . they all have pistils and so on but the fresh foilage is not looking very clever . the new leaves are very thin and twisty and have a yellow tinge on the ends, looking at the size of them im not holding out for much , anybody tried these and if so what do they yield . the strains are : 2 white dwarf , 2 red dwarf , 2 diemos , 2 syrup and the rest are mixed and i have no idea ! can anybody help me and shed some light on the thin yellow fresh leaves

pics would help

Yellowing is usually lack of Nirtogen, but it could be many things. Hard to say with a pic

thanks for taking time to look into my post grorite this has been my first post and im just finding my way round . not sure how to upload photos but al be trying ! any help on how to upload pics would be well apprieciated.

in the quick reply section where you type, it has a button that says insert image

davickm1 said:

Yellowing is usually lack of Nirtogen, but it could be many things. Hard to say with a pic

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Not when it is at the tips of new growth. The leaf twisting also gives the impression that it is something else.

IMO, the twisting leaves are due to improper pH levels, heat or light stress. Sometimes however, new growth emerges twisted and thin and evens out as it grows.

The yellowing tips of new growth sounds like some imbalance of micronutrients. HOWEVER, I would water with straight H20 for a few waterings rather than throw all sorts of stuff at it.

what kinda lights are you using?