So yes I need a lot of power and I’m pretty sure that I already have all the power that I need for all the lights and all the peripherals it’s a question of layout and actually equipment purchased
Anything in the budget for insulation?
(by the way, Negative, I would totally agree with the logic and I would endorse bar lighting too but I just infer that the budget wouldn't hold at this stage. If money were no object, I'd go LED with this space. A good set of bars should last 5-10 years. Maybe something Star can invest in in the future.)
If you would like to consider LED, pls have a look at our bar design light FCE-6500. It can cover 5x5 and offer 650W power.
https://www.mars-hydro.com/fc-e6500-led-grow-light
I got a little different calculation than Mithridate but same premise and using .293 as the watt/btu. I usually assume 3 BTU for every watt. @ 12000w, you need 3 tons of cooling for HPS. That calls for about 40-60 amps I think. Some mini-split systems (multiple heads) can achieve the same but they'll run about 5k it looks like.
But if you roll the Mars LEDs + shipping that's 5k and then cooling you maybe only need to spend 1-2k on cooling and it would take a lot less amperage. The immediate concern would then be hanging/proximity/infrastructure. I assumed everything was going on the floor but if you go with tables, you'll spend a bit more hanging them effectively. I know you grow 'em tall which could make daisy-chaining these difficult if you have a perpetual crop cycle. Plus, not to mention the whole LED learning curve yadda yadda
I've never really looked into how they did their cooling. Give it a shot
Good discount if you buy 10 or more ,which is what I would be doing, are they lightweight & easy to hang ? can They be run vertically ? Can they operate on 240? Volts