Leaves curling up inwards on the edges

drdodge29

drdodge29

Well-Known Member
Babies are 2 weeks from the day they were about 1/2" above the starter plug
Temp 77 f
Water Temp 73 f
PPM/EC 550/1.1
Humidity?????
Lights 400 MH 12" away(originally it was about 8" away until I noticed leaves curling up on 2 out of 5 plants. And on both of those plants there a very little, barely noticeable, yellow marks on the very tips of only 1 leaf from each of those 2 plants. I've got plenty air movement with 4 fans going.
Could it be from the light being 2 close or nute burn?:peace:
 
burlingo

burlingo

Well-Known Member
could be nute related.

maybe try using a little less.

other than that it looks good, in my opinion.

someone experienced will be able to answer you better. i am merely bumping this, but trying to help too :)
 
N

Nocturn3

Well-Known Member
Doesn't look too bad to me. Curling upwards is usually a sign of heat stress, although your stated temps seem fine. You don't know your humidity reading though, and that may be connected. I don't grow hydro, so a lot of this stuff is greek to me, but I found this thread on another forum, which may be useful to you. The problem seems similar, and some good suggestions were put forward there.
 
Kingb420

Kingb420

Well-Known Member
mine are the same, im wondering too, i am in dead winter now i donr have a RH gauge either, i know mine has to be low
 
Resident Kush

Resident Kush

Well-Known Member
your too close to the light !

disregard the nute burn comment, as you would have burn spots
yellow tips, again is light burn
 
cannabiscrusader

cannabiscrusader

Well-Known Member
agree, light too close. When the leaves form an upward v like that, they are trying to reduce their surface area to prevent transpiration. Id go 15 in away with that light and let them recover. When they do you can then move it down gradualy. Like 1/2 a day see how they respond
 
burlingo

burlingo

Well-Known Member
^^ haha, yea. go with what the above said.

i have a habit of not reading all the text in a post. i didn't read that your light was so close.
 
drdodge29

drdodge29

Well-Known Member
Leaves are now starting to fold like their praying. Does that make sense 2 any1. Like folding in half in the middle vein.
 
billyblunt

billyblunt

Well-Known Member
well the proof is im the pudding,go and have a look at the leaves and see if there better.
if not then move it further.

lol im using a 250watt mh at 18" from the tops and mines fine ,with no fan running on it at all
how accurate is ur humidity meter?
 
drdodge29

drdodge29

Well-Known Member
billyblunt said:
well the proof is im the pudding,go and have a look at the leaves and see if there better.
if not then move it further.

lol im using a 250watt mh at 18" from the tops and mines fine ,with no fan running on it at all
how accurate is ur humidity meter?
Click to expand...
Wife is at Wally World right now buying m ea humidity meter
 
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