Ok, here is the envisioned idea. After much debate between garage and closet set up went with closet for the reasons of security and not having a large cabinet that really does not have a purpose hanging out in back of garage. Situation: Long Term rental house, so not major changes to house and has to be stealth because management checks up yearly, they are not invasive just making sure the house is not falling apart for owners Have no problem with putting in vent in closet because I can patch it up later and paint it and no one is the wiser. I will also be able to run an additional breaker if needed but think i found one in attic that is on it own still looking into it to find out what circuit it is on. Overall space I have to work with is 48" wide, 18" deep, 65" High. This is just for flowering, have 2 spots I can put it in closet (will make sense once camera is charged). This is on second story so will be able to vent into attic or possibly if I can scrub air good enough into the heat return on furnace so i can reuse some of those BTU's. Looking at dividing that space by 4 parts so 24w 18d 30h chambers. (some loss of height for catch pan for water Size of, base at 5 " deep can hold over 18 gallons ) - Each chamber will have 2 plants DWC shared container - I have two containers I am looking at both from Ikea same model just changes in drop menu. I own some of the 5 Gallon ones already and they are incredibility sturdy design and the lids are not flimsy at all A+++ recommend them to anyone. IKEA | Boxes & baskets | Secondary storage boxes | SLUGIS | Box 22" L, 22" W Then either 6" D (5 Gal) or 12" D (10 Gal) If i use the deeper container I will have alot more room for root mass but I lose space above for grow room, but with the 6 inch I get more above space but may become cramped but I do gain alot of space above. So more root room with 14inch from container to max light height Or less Root room and 20 inches of space from light to container top So what do you guys think? Maybe I try one of each. - Screen about 6 inches off top of container. - Lights 3 FT55W CFL (PL-L) with ballast located outside of chamber, uses about 4 inches of height for reflectors and also venting End Result will allow me to have them staggered by 2 weeks so bi monthly harvest hopefully hit a 1 to 1 ratio of grams to watts once dialed in. Also 8 Plants in Flower, 2 in a quick veg, 2 in clone and 3-4 mothers which keeps me by the rules for WA state MM. Pictures and drawing will get added later today.