Hi all,

It seems as though one of the Lows seems to be curling up as you can see. Has anyone else had this problem?

If the leaves become pale I'd say it was a magnesium deficiency. Have they been like this for long? Keep an eye on them and add some epsom salts if the tips become pale, yellow or white.

Could be Mg, but it can also be caused by heat stress or low humidity... or over nuting, I think...

What are you temps and RH levels? How old are they (and what stage are they at)? When did you last pot up? What, if anything, have you been feeding them?

It's probably heat stress. The leaves are trying to cool down. Mg def would show by the veins becoming more relatively darker than the rest of the colour in the leaf, and that pic doesn't seem to be showing that.

hi there..im getting the same with mine..im 2 weeks into growing autos..my leafs look the same...im only using a 125cfl light tho...i aint got a clue wat it is

Same here but mainly while planst are very young,like first potting then it straiths up

It was asked here in Lennons thread but still didnt figured it,most conclusions are its due humidity http://www.uk420.com/boards/index.php?show...=173839&hl=

I'd agree with the heat/environment-stress diagnosis to start with...

I've got a pheno that seems to be especially susceptible to this when it's young... it does grow-out of it...

ATB

Stan

ive jus brought a little fan to get the air moving around in the cupboard..so fingers crossed thus sorts it out...has any1 grew short stuff 1#??

doesnt look like mg , i'd guess at heat/humidity problems . what are temps and rh ?