Lighter leaves on curling

[dave1raver]

I have 5 THC bomb in a 1.2 X1.2 tent under an air cooled 400w MH light.
Temp are around 72 degrees and humidity is about 50%
My problems are that a few of the leaves look lighter green than other plants and some of the leaves are curling up at the ends and going slightly outta shape with a slight yellowing around the leaf tips.
Watering about every 3 days in fabric 20l pots

They are currently in plagron Royal mix soil.

Should I hav a small oscillating fan into there with them you think?

[uparoundthebend]

look ok to me mate to be honest. definitely get a fan in though blowing air around, let the air bounce off the tent wall if its a strong fan. if theyre in 20l of good soil they should be ok for a bit, I'd wait till they start going pale then start feeding. im smoking thc bomb now, its good shit you'll love it!

'"this species has amused itself to death"

[dave1raver]

Thanks mate
Just been ang got a 12 inch desk fan that oscillating type.
Tried it in front of the plants on the floor and it blew them about all over the place, think it's a bit to powerful

[uparoundthebend]

if you've got enough poles hang it upside down from the top of the tent so it's blowing down, depends what the base of the fans like, or use bungee straps or something if its too powerful on the floor.

'"this species has amused itself to death"

[dave1raver]

Thanks for your help.
Is it better to be blowing down on the plants then? Rather than from the sides?