MG the tent I have and pretty much all ones being made now do not have that kill the plant syndrome. I have been running mine for about a year now and the only thing that goes on inside there is formations of Bud!!
There was some kinda vapor leeching going on with some tents a whlie ago but thing most companys got there heads out of their arses and have not heard of anyone losing plants to tent syndrome or whatever it was called, sorry cant remember very well. Fell off ladder at work today and just got home from ER a lil while ago. Morphine kinda messing with thought process atm. Got mine from BGH Hydroponics | Hydroponic Supplies just shy of 3 bills. I have the GL120