what page of your thread
@hyroot
the other thing is before I get into it, if I was to build one that can hold like 30 gallons of soil, could I keep in the grow room for multiple cycles or does it need to be emptied and rinsed between cycles? no funky gross gunk growing in the reservoir?
I do not want to buy beneficial microbes or EM because I simply doesnt spend money on things like that! I do use top quality vermicompost so I think it will be fine?
I do not want to use air stones just because it is more electricity, more electrical wires running in the grow room, plus the big plus for me is to use more soil in the room without spiking relative humidity, I feel the air stones would increase humidity in the grow room.
I have a couple plastic 55 gallon drums kicking around, I think Im gonna take the plunge! thanks for answering my many questions.