Ill be honest, I started in 98 and was also on overgrow as was TEX and some old schoolers here, and I love this game. I've used or tried almost every product, style and technique. I like simple, effective, and productive. I suppose we all do.
I use carbon filters as scrubbers, but also wall fan circulation. Wall fans break constantly so this made sense as my grows progressed. Also use my a.c's for additional circulation, not just cooling. Ducts, dampers, and physical controls all cut flow and overall air movement. Look at some of the best performing grows in here and watch the a.c set ups. You will see by the end of the grows, grills are clogged or removed and ducts are trashed or moved to a diff side. I use only stands with a built in filter. I've done it, this style kills it! Move the air volume intensely. No more ducts or normal reflectors ever again. Just cheap ass bat wings, cheap magnetic ballasts, with simple foods plus organic teas. Not for beauty, or bragging rights, or saying I'm organic or some other health alternative b.s. It's a multi stage plan for quick quality production. Reflector lenses cut UV transmission and cannabis pants love UV.
My ceilings are 26' tall.hahaha, I had to break the mold, my normal btu'a.c calculations and co2 burners didn't apply. I can't wait to harvest either. Just roll the table I like into trim staging zone, and sic my team on it. With a watchful eye of course....