i have a 13" deep by 16" wide by 4 foot tall grow box with a 135w ufo light full spectrum also might invest in a red light for flowering stage and also i have a 5 gallon hydroponic deep culture system just need to know how many plants fit into that box or how many weed plants i would be able to grow
One. That's all you have light for. Possibly not even enough light for a decent yield, depending on how big you let it get.