[Arminius]

I figured since the location dramatically changed just as I was getting dialed at the last site, it is time for a new thread.
Even with a 6 month setback by moving, Freedom 45 is still on track! I now have 3 times the flower space, with a dedicated 8 x 10 propagation/veg room. Only problem is, the site was a mess, and I refused to grow in the existing conditions. I basically have 3 horse stalls with a 4th down the road. They were growing on dirt floors, with unsealed rooms, it was a disaster waiting to happen. I convinced the property owner to invest 5k and I would give her half the crop from one room. There has been a few bumps in the road to say the least, but I think I have the last issues within my control now.
I still have to finish my larger flower room which is 8 x 10 vs the 8 x 8 that I will be sharing with the owner, and set up my last electrical outlets, but I am very close to going all in...
I have been struggling with low temps, faulty PH meters, and my own Mr Leahy. The low temps have me reconsidering my ventilation scheme, and this is where I was hoping for some input. I am contemplating a flip setup vs passive intake and 2-3 times a minute air exchange. The problem is, with outside air close to freezing, even with lights on it was barely 60 degrees. The cost of heating is something that I want to avoid if necessary.
What I am hoping to pull off is using my veg room as the lung room for the adjacent flower room, and with lights on opposite schedules, the other flower room would pull air from the first flower room.
The advantages of this set up would be only requiring fans in the last of the flower rooms, and relying on negative air pressure, and circulating fans to keep things stable. During lights out, warm low RH air would be pulled in, and vice versa (sorta).
My concern is CO2 levels with air that has already passed through one flower room, not having enough for the second. My thinking is that during lights out the plants are creating CO2, but are they at the same levels as fresh air? My hydro store is willing to loan me a CO2 meter, but it won't do me any good unless I have the rooms full of plants, at which time re-configuring the ventilation would be a huge pain in the ass...
The other option is using the 3 x 20 space outside the rooms that house my ballasts, and feed tanks as a lung room. I would likely need to use an active intake to make sure I could supply enough air quick enough to be conditioned. Just seems like another pain in the ass... And I would need to provide active exhaust for both flower rooms which means more money and electricity....
I will be posting pictures of the room over the next couple of days, but I am hoping you guys can help me with the ventilation issue while I take cuttings and tighten up some lose ends.

Got the first bucket and sittin on it........Show us some shit Arm.........Lungrooms take dialage....We`ll work it out.......

Peace....Freds.........

[hotboxes]

First

[Arminius]

Here is the layout of the rooms, and my proposed ventilation scheme.

I have an electrician that will build the relays if I decide to do a flip, otherwise I have enough amperage to handle 12 600s when I am fully up and running.

[hotboxes]

Dammit DHF thought I was gonna sneak in there lol

[Ichabod Crane]

What the hell I just looked at another web page for like 5 minutes.

[hotboxes]

Armminius , can you put a lung room between the 2? Or even use the area where your tanks will be?

[Arminius]

The rental unit I moved into site unseen is a mess. Total non functional as a SFD, and was a contributory factor to the end of a 5 year relationship (she wasn't prepared for the big picture)... We are still really good friends, but we fell out of love. I am seeing someone else, taking it real slow, and enjoying my freedom!
Anyways, to pay the bills I have a grow in the house as well. I will be expanding the bathroom in time, but for now I put up the wall and created an 8 x 8 that is about to flip. When I do the bathroom I will just move this setup one on the other side of the wall in my eventual walk in closet.
In the closet there are 6 USD that are way too big! Luckily I confirmed with my sparky that I have a free 20 amp breaker at my disposal for two more lights after stretch.
I was going to do the USD in a 4 x 4 tent, but I couldn't pull it with my screens. That left me short after I put up the wall, so I added two Chem's Sisters in my soon to be patented Ricky's Stackable Dope Boxes... Cost about 10 bucks, and 10 minutes each.

[Ichabod Crane]

That is one sweet looking black clip.

[Arminius]

Last time I ran the USD in these screens I almost broke 1gpw. If I didn't have to pull them a week earlier, I know I would have. The other factor was holes in my canopy at the top. FHC had the same experience, so I decided to top two of them in veg to see if I can get a more even canopy.