I’m not sure if I should use 2 1000 watt hps for a 8x4 grow tent

GROBRO6967

GROBRO6967

Well-Known Member
I’ve seen a lot of people use two different types of lights in the same room but not in the same tent. I was wondering if I should use 2 1000 watt hps in an 8x4 grow tent or if I should use 1 1000 watt hps and another 600 watt led.
 
If the led is a quality full spectrum light and draws actual 600 watts, I’d run that. You’ll be able to compare buds to the hps and make a decision after one run. Some people prefer the bulk hps can provide but quality led brings out another level of terps and frost IMO. If power savings aren’t a concern you may just run the dual 1000 watt lamps. Whichever way you go should be plenty enough light for the area
 
It took me 2- 8" 720CFM fans to keep a 4x8 cool in a 66F basement with 2- 1000w hps in air cooled hoods.

IMO, it's not worth it. Too much heat and noise.
I'm running 2-600w hps and a 315cmh in there now.
It only takes 1 exhaust, and I should still get 3.5+lbs on a full run.

Much easier to split yours into different tents.
 
.Smoke said:
It took me 2- 8" 720CFM fans to keep a 4x8 cool in a 66F basement with 2- 1000w hps in air cooled hoods.

IMO, it's not worth it. Too much heat and noise.
I'm running 2-600w hps and a 315cmh in there now.
It only takes 1 exhaust, and I should still get 3.5+lbs on a full run.

Much easier to split yours into different tents.
Click to expand...

I use 2x600s in my 8x4 and was also thinking of going to 2x1000w.....

I maybe just ad a 315 cmh in the middle
 
.Smoke said:
It took me 2- 8" 720CFM fans to keep a 4x8 cool in a 66F basement with 2- 1000w hps in air cooled hoods.

IMO, it's not worth it. Too much heat and noise.
I'm running 2-600w hps and a 315cmh in there now.
It only takes 1 exhaust, and I should still get 3.5+lbs on a full run.

Much easier to split yours into different tents.
Click to expand...
Is the 3.5 lbs on average? Also how do you keep the tent cool? Do you use a portable ac?
 
Fruity420 said:
If the led is a quality full spectrum light and draws actual 600 watts, I’d run that. You’ll be able to compare buds to the hps and make a decision after one run. Some people prefer the bulk hps can provide but quality led brings out another level of terps and frost IMO. If power savings aren’t a concern you may just run the dual 1000 watt lamps. Whichever way you go should be plenty enough light for the area
Click to expand...
I may just go with one 600w led and one 1000w hps. I assume on the information you’ve given me the led would bring out max terps and flavour and the hps would bring out max yield. Correct me if I’m wrong
 
GROBRO6967 said:
Is the 3.5 lbs on average? Also how do you keep the tent cool? Do you use a portable ac?
Click to expand...
It depends on the strain. 3.5lbs is about 1gpw.
I run 8 plants at a time. Just harvested a smaller Granddaddy Purple that yielded 248g. That's around 1.32gpw on a meh plant.

Your yield will depend mostly on your skills as a grower.
 
Fruity420 said:
If the led is a quality full spectrum light and draws actual 600 watts, I’d run that. You’ll be able to compare buds to the hps and make a decision after one run. Some people prefer the bulk hps can provide but quality led brings out another level of terps and frost IMO. If power savings aren’t a concern you may just run the dual 1000 watt lamps. Whichever way you go should be plenty enough light for the area
Click to expand...
Thank you, your information has been very helpful :)
 
.Smoke said:
It depends on the strain. 3.5lbs is about 1gpw.
I run 8 plants at a time. Just harvested a smaller Granddaddy Purple that yielded 248g. That's around 1.32gpw on a meh plant.

Your yield will depend mostly on your skills as a grower.
Click to expand...
I’ve never grown anything in my life before haha, I take it gpw is grow per watt? Also if you don’t mind me asking, how would I measure how many watts of light are going to each side of the tent? Do I have to get some sort of special equipment?
 
GROBRO6967 said:
I’ve never grown anything in my life before haha, I take it gpw is grow per watt? Also if you don’t mind me asking, how would I measure how many watts of light are going to each side of the tent? Do I have to get some sort of special equipment?
Click to expand...
GPW= Grams per watt. (1000 grams yield off a 1000w hps= 1 gram per watt).

As for measuring light, you'll need a Lux or Par meter.
Here's the one I use ($30 amazon) along with a video of how to convert Lux to par.

Also, www.growweedeasy.com has a lot of real good information for new cannabis growers.
I highly suggest reading it over a couple of times.

It really helped me starting out 2 years ago. I was in the same boat as you. Never grown anything in my life up until then.
 
.Smoke said:
GPW= Grams per watt. (1000 grams yield off a 1000w hps= 1 gram per watt).

As for measuring light, you'll need a Lux or Par meter.
Here's the one I use ($30 amazon) along with a video of how to convert Lux to par.

Also, www.growweedeasy.com has a lot of real good information for new cannabis growers.
I highly suggest reading it over a couple of times.

It really helped me starting out 2 years ago. I was in the same boat as you. Never grown anything in my life up until then.
Click to expand...
Thanks for all the help you’ve given me, I hope you grow the most frostiest densest bud on all your grows :)
 
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