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Max light wattage and plants in 5 X 5 Tent?

So its been a while since I've done indoors and trying to get my setup going again. I am buying a 5x5 grow lab tent to use since i can't quite fit the 9x5 in my spare room. I was running 2000 watts turbo charged in a 10x5 enclosed space in a basement last time i was growing about 25 plants.

My question is how much wattage is too much for my 5x5 space? I dont really want to waste electricity if its not going to help the yield.. I am just starting off with 12 in there this time around and then probably bump up to 16-25 for my next run. I have ran 2 600s in the 5x5 before and was able to keep my temps at a good level since the lights are in Air cooled hoods... The upside is the ballasts ARE Switchable so if i wanted i could set them up as 2 600s and get that extra 200 watts instead of running a single 1k in there.

I use 3 liter smart pots so thats how i can fit up to 25 in a 5x5 at a time 5 rows of 5. Obviously its a tight fight but i usually keep the veg short...4 weeks and top after 4th node so they are bushy but get nice top buds and no larfy stuff( just something i have learned from past grows...) Anyhow, just curious as to what the general consensus is on how many watts per plant before its just reflected... thanks guys!:)
 

HATORI HANZO

New member
1640 in my 4.8x4.8. I did notice some light stress when I introduced the cobs so I have the 1000 at about 33 inches, the cobs at 20 inches and the DS XTE 100's at 18 inches.
 

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HATORI HANZO

New member
1640 in my 4.8x4.8. I did notice some light stress when I introduced the cobs so I have the 1000 at about 33 inches, the cobs at 20 inches and the DS XTE 100's at 18 inches. I have 4 plants in 15 gallon squat pots full of Clacks mix. All plants have been mainlined for 16 tops, I did not trim all of my side branching because I want to see what will happen with this amount of light, I'm in the 3rd week of flower and the strain is GTH.
 
Got it at 2x 600 watts ducting up and out of tent through 6 inch hole into attic. Temps are perfect but wish I could crank em up to 2000 watts...
 

Granger2

Active member
Veteran
Best bang for buck, temps, etc. with watts/sq ft in the 60's. No need to guess. 5x5=25 sq ft.
2000/25=80wsf. 1600/25=64. Good luck. -granger
 

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