Hey all
I have been battling with this problem for about two months now and its driving me crazy !
I recently built myself a new growroom out of plywood in the basement of my house with the walls painted white and floor secure on the floor. I have a 4" fan sucking air out and a 4" hole cut for air to flow in which i have attached a lenght of ducting leading outside for fresh air. Theres a paving slab in there rised a couple inches off the ground for my ballast to go on and fo my fan to clip onto
Problem is when ever i put a new plant in there it starts looking like this !
And before you say sulphur deficiency, ive tried it Read here ---> https://www.thctalk.com/cannabis-foru...m-top-of-plant
Its definatley outgassing of some sort as i have done LOADS of research and i foud lots of pix of plants looking the same from people using cheap growtents.
The only thing i can think of is the paint> Has anyone ever heard of painted walls outgassing and ruining crops ?
PLEASE HELP !!
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