Sick Plant Need Help

This is my first grow using a 400w Mh. I am growing three plants, one of which is Nirvana Blue Mystic and the other two are free seeds that came with the blue. At first all plants had curled leaves which Im pretty sure was heat stress from having my light like 6 inches from the plants. Two of the plants have recovered from the stress but one seems to be having trouble. Basically, I want to know if this looks like heat stress or something else. Pics

heat def can cause leaf curl. what are your temps.? throw a fan on em.

I would think it was heat stress, ive tried looking at the leaves below and they seem fine, whats the distance of your light from your plant now? if all the plants were suffering from the same thing, and 2 of them returned to health, provided the conditions are constant throughout each plant, the answer would be heat stress.

Try and lower the lamp by an inch or two to see what happens. When it returns back to health, you can always fiddle about with the height to get your optimum lumens.

im gunna have to go with silky on this one! I have a 400 mh too and i keep it like 18 inches away! those leavces that are curled up probably wont come back but i shouldnt have that problem anymore if u just raise! the only way u could keep ur lights 6 inmches from the tops is if u vent them correct me if im wrong guys!

ok thanks guys. I moved the light up to about a foot and a half and have tmeps around 80 to 85. I have a fan blowing on the light to keep the heat from getting to the plants. Is it alright if the fan blows the plants around alittle?

Fyodor420 said:

ok thanks guys. I moved the light up to about a foot and a half and have tmeps around 80 to 85. I have a fan blowing on the light to keep the heat from getting to the plants. Is it alright if the fan blows the plants around alittle?

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ya deff!! it will make ur plants more sturdy! they should always have a little movement and good air flow!

ok thanks for the advice!

actually the fan will help not only make a sturdier plant it will help her from getting fungus and such. Do not wind burn the leaves. It sounds like you got it right by blowing against the light. Heat will def curl the leaves. Try to keep your starters no more then 86 when they are developing the 3rd real leaf is when the gender is decided. No stress, great weather and high Nitrogen and lower P&K will get you closer to a female. Along with some humidity, If the conditions are tough or stressful the plant will go Male as Males are tougher.