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could breaking up seedy bag weed near sinsemilla pollinate it? not that you would want to...

Do marijuana roots secrete chemicals? If so what is their effect on the grow medium?

when growing using hydroponics how many plants per square foot should be planned for mature plants?

400W metal halide for a 2.5x2.5 area. Was 8 inches from tops of plants with temps ranging between 80-85 daytime. The only ventilation is 1 12 inch oscillating fan blowing on hood and plants. Another oscillating fan blowing fresh air into the room. I have seen alot of posts saying put it as...

I just bought my first metal halide. its a 400w venture lighting brand with m59h printed on the bulb. The bulb is brand new out of the box and will light then after 10-15 seconds it goes out. It was purchased as a kit with socket and ballast so i assume everything is compatible. Is this...