i have a similar sized tent. 4.5x 8
my ambient room temperatures run in the 80-85 range. good old sunny southern california. (not good in this case).
i had one 1000w (quantum ballast) - running with a cool tube. that sucker put my temps up to 90-93 range. and that was running 75% (750w) - running at 100% (1000w) my temps spiked up 93-101 range. i didn't even want to fire up the second 1000w light i had set up in the tent - which was very similar to your new set up.
i ended up buying a light mover temporarily. just to finish out the ones that were burning up in the tent.
the heat makes the buds airy/non dense. and it kills the smell that your herbs would usually have. i had a variety running - alien bubba, alien dog, pure kush, banana og - just 2 foot plants using fox farms in 3 gallon pots using lucas/ w.
floralicious - rapid start - kool bloom liq - and
calmag. . (i had to go dirt because i was running dwc [which i've had good success with in the past] - the water temps went up and were boiling my roots)... anyways. bunch of problems moving to my new place that is 10 degrees F hotter than my old one. the buds came out weak as hell - (probably due to the temperatures being so damn high - among other things - such as super effin mites from PROGRESSIVE OPTIONS clone only dispensiary)
lets just say that i had to shut the flowering chamber down until i could afford a minisplit - so i got a 1.5 (18000 btu) ton mini split. haven't installed it yet. but i've noticed with friends grows that the cooler temperatures help the buds fatten up and get dense (with no co2). they use the window type air conditioners - i got the mini split for a steal just under $1,200.
ive done a lot of reading regarding air conditioning - mini splits are the way to go. portable airconditioners suck the co2 out and so do window units .
if you don't have an air conditioner i'd just go with the bottled co2. pain in the ass to transport - but worth it. the co2 allows for higher temps tolerable in the high 80s very low 90s.
i'm not so sure the tent will solve your problems. it didn't solve them for me. in my opinion. the larger the airspace. the more air the lights have to heat up. the smaller the airspace (in a tent) the quicker stuff heats up.
i almost wish i didn't drop $350 on the tent i got. its a bad ass tent tho... access points on every side. (from HTG garden supply in the east coast). and it has adjustable flanges 6"-8".
anyways i ramble.
you're very lucky in the sense of growing that your temps don't spike. the only thing i'm lucky with living in so cal is that its so hot the females have to walk around in bikinis, a*s shorts, and mini skirts. you win some - you lose some eh?
