I have actually thought about using tents in the rooms. I already have both rooms exhausted outside, so if I ran a few tents, I would only need to exhaust when humidity is too high. I had also thought about building an adjacent room to circulate air through. Control the environment in that room and just have it circulated through the other two. With the cost of lumber right now, tents would probably be more cost effective! Lol
Ya, I've been hearing about issues with lumber availability and prices for a handful of years now. Tents and how inexpensive they're becoming, in the room, might not be a bad idea. May restrict your real estate a bit, but also gives you a bit of a buffer so to speak ime. An example is whenever either of my tents are having swings and/or extremes I, like mentioned, can open and/or close certain vents (or crack doors themselves) and reorient the fans to adjust accordingly to manipulate the environment inside the tents to achieve desired levels.
As long as the house/room temps and humidity are at comfortable levels to me I can sway the spikes in tents to acceptable levels for them with little effort. I honestly haven't had a dedicated intake or exhaust in either my tents (or closet) in quite a while because of this, just something in there for air movement.. Never necessarily had issues running an intake, ever, but sometimes running exhaust can make levels drop below what is desired, adds noise, and requires more electricity (these things are factors for me at least).
Whether utilizing tents, or building an adjacent room, to get better control of the environment, both sound like viable avenues to explore imo. Barely above 50% in flower is just fine for me, in my location and environment anyway... Higher during veg I shoot for...anything around or above 70% during lights out, especially in flower, and I get super worried...
although I've never experienced any serious mold or rot in my tents, 60s 70s RH during lights on with fans blowing is just fine, but these levels during lights off is when I get very nervous during flower... Don't even wanna chance it! Lots of air movement at canopy level at all times is necessary imo, especially during lights out if high humidity is a concern.
Sorry for the babblings, just an attempt to brainstorm and shoot the shit with ya?happy growing brada?