Warning! Sick plants in a grow tent? read this before doing anything!

Good post, and good find. The more info we have the better off we'll no matter what the subject matter is.

from what you are saying ive got the same prob,

i had a nitrogen defiency or what i thought was, but the smaller nodes are greening up its just the larger shade leaves showing what i thought was chlorosis,

:(

These dodgy tents are still about!! my heads been fried for months trying to work out what problems ive been having, ive been growing for years and this problem nearly had me beat till i came across this and numerous other threads. Transplanting perfectly healthy plants from a white lined hydrolab tent to a cheap mylar lined tent with a dodgy white pvc liner totally messed my plants after a week, now ive gotta wait and see if the new plants are gonna take in the mylar tent or could it be the hydrolab tent letting off gases in the room their both in, i run fluro's in the white lined tent and hps in the mylar tent