looking real good. finally got me some BS along with Anvil. wife says no grow till I get the exhaust figured out, she wasn't happy with the last batch smell.
I have 2 with 2 carbon filters, just need to exhaust under house and keep door closed. Got so many little things I need to get done that it's on the back burner for a few. then probably single strain seed grows to build up a stock pile. Then maybe I'll look to see if any might be promising crosses.
you also need to figure volume of air exhausted per tent. if your running 4 inch ducting through 4 inch fan in 1 tent, adding another will most likely cut 1st tent intake to nearly half (might be wrong, using old fart knowledge here). since you got speed low it might not be too much of a problem as it doesn't take much to keep a negative pressure on a tentGotcha, I've got my ducting running out to a basement window luckily. If I set up a new tent at some point, I'm going to need a second filter but I was thinking about just using one fan and splitting the ducting to both tents. Do you think that would work or would I also need two fans? My fan speed is pretty low right now so I figure I could just crank it up a bit for two.