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If you use the fan your currently using to cool your hoods and use it as an intake down low and your existing exhaust fan you should be in the neighborhood of exchanging your air 2x a minute. No more hitting your head on the edge or your hoods. Think of all the money you'll save not buying ducting clamps and hoods; oh and no more bees and flys mysteriously laying dead on your glass lens that you have to clean; yes one less thing to clean. It will shock you how much cooler your room runs. Only thing is you'll need to change three things if they are in place. 1. A digital thermometer will be useless unless shaded. 2. You'll enjoy 10% more photons reaching your ladies. 3. You will be forced to wear eye protection....
All the tests I have seen show a 3-5% difference with the glass and easily made up with distance.
I share cooling and heating with the veg room next door to the flower room. It uses an intake fan to bring in cooled air. And it's all integrated into our living area for heat and a/c but I get what you are saying and of course I have seen the images you posted after this.
However. I have chimed in on many a vert thread. Most use trellises in a tent. Curious about yield.
I am matching the highest I have seen with similar wattage with 2 overhead 600's.
I run perpetual staggared plants with a simple 250 watt t-5 veg tent and then into the flower room as plants harvest.
Output averages about 20oz per month and all the coconut oil we can use.
If I monocrop 4 plants at a time I could yield quite a bit higher. I always have different strains from new seeds now.
I have more space in my basement and could grow 6' plants like you show and when I rebuild I can try it. I considered vert bare bulb trees for a while now.
I do like the security of having the next plant ready soon all the time like I have it. And relatively short cycle easy veg system.