Iluminación

Marshydro TS1000 is what I use with a 70x70. Works great with 3 plants in the box and I doubt you would want to put more in anyway. Good luck!

If you go with the inexpensive LED, you need 600umol/s and they are around 2.2-2.3umol/J efficiency (i'd expect spec is close, but ... often they fib a bit on this stuff).. that's roughy 260W to at upper end of light intensity given normal co2 in atmosphere. if you spend a bit more, 600/2.8 = about 215 watts needed. ts1000 - 150w at 2.3umol/j is 345umol/s for about 2/3 m^2. 345 / .66 = 522 PPFD --- This would be at lower end of what you want. Unfortunately, at that size it may be difficult ot find an upper end light. FC-3000 would be a bit overkill. Run at 75% or more hieight which has a bonus of evening out light footprint more. You'd also get an honest 50,000 hours of use out of it, less heat produced in grow area, and save electricity every month of use in comparison. (75% would be roughly 225 watts) To make it apples to apples, you'd need two of the ts1000, and it's still fewer photons, even if a bit more appropriate for 80x80, than the fc 3000. So upfront cost would be about the same, actually. 0 vs 0 .. going by mars website, only. or, the 300w tsw2000 0 vs 0. The extra longevity alone would be worth it... it costs more to own those lights than to spend more and get the FC3000... and grow top-notch bud with option to elevate CO2 and increase yields another 20-25% at 1200ppm.. it's a 7-10 year light depending on use... (dedicated 12hour bloom light.. diodes be rocking for 10 years... driver prolly die first, lol)... Wherease those less expensive lights are "spece heaters" and have a much shorter life before they hit 90% of original intensity.

Hello for a 80×80 tent you can use 400 watts HID or Mars Hydro TS 1000. It is up to you . good luck. Bye