hey Reefs, sorry to hear it's an all outdoor hobby now

specially in Curd Country. I was wondering what You used for your carbon filtration system? (yeah, carbon right) I mean did you diy it or go with a Can filter or what? I'm adding another 150w hps and will need to rework for more ventilation. Plus I'm tired of trying to only run less stinky strains.
Thanks and stay warm.
Peace