one plant, one filter, smell actually stays contained

been running a 2x2 for a while now and the single biggest upgrade wasn't the light or the soil. it was accepting that one well-trained plant plus a properly sized carbon filter beats two crowded plants with a filter that's working overtime.

most people undersize the filter for their fan. if your fan is rated at 200 cfm, get a filter rated at 200 or above. sounds obvious but i see people pair a big fan with a small filter and wonder why the hallway smells like a dispensary.

vertical space matters too. in a small closet, every inch counts. running one plant in a fabric pot with some low-stress training keeps the canopy flat and lets me fit the filter and fan up top without sacrificing much headroom at all.

the specific takeaway: drop your plant count if smell is the priority. one plant, trained wide, filtered properly, is way more discreet than two plants crammed in. the yield difference is smaller than you think once you dial in the canopy.