Dropping leaf?

lunyk

Active Member
I have 2 plants and the leafs of the both plants are dropping... what's the problem ?? :confused:
 
my soil drain enought, it's promix with perlite. but it's could be over watering... how much water should I give them and in which interval ???
 
light => 400w MH/HPS (MH for right now because it's the growth)
temperature => is about 75-80F
humidity => 50-60%
age of the plants => I don't really know but they are 24" height
ph => I didn't received my ph meter...
nutrients => for right now I'm using Optimum-Hydroponix 2-part formula for the growth stage with Supermax B1, but I orded General Hydroponics flora-gro, flora-micro, flora-bloom and Superthrive

I also have a 16" oscillating fan running 18hrs/day (when the light is on) and 2 computer fan, running 24hrs, that's bring air from a exterior wall into my closet. And the both are in a round pot of 12".
 
could be a ph problem,,,,or could be under or overwatering,,,how high above ya plants do you have ya light?
 
20", it is possible that they are under watered ?? I tranplant it in the 12" pot yesterday... and I put like 500ml of water and when I saw the leafs drop I added 3L of water
 
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