Hi! I'm new here and happy to be part of community. I have a question about ventilation. Want to run 2 rooms (1 bigger than other), in both will be 1 flowering tent (approx. 3m2) plus 1 smaller veg tent. These rooms are sharing wall. Was thinking to drill 2 holes in this shared wall and attach to holes fans and make from it exhaust and intake for both rooms. Optionally I could use 3rd room and run exhaust from 1st room to 2nd and than from 2nd to 3rd. Would it make any sense? If not do you have any other idea for venting this space having in mind that I can't vent outside or directly through windows (still I can keep them open) neither can't exhaust into chimney. Will be thankful for any input. Sorry form my english, I'm not a native.