So it's veg under mh and flower under hps. Right?Ive flowered under fluoros and HIDs (mh/hps) and the HIds are worth the extra effort in my humble opinion.
J is correct youve got'em backwards there.
Correct sir!So it's veg under mh and flower under hps. Right?
Do you have any experience with LED's? All I know about them are they're expensive, I would have to sell a couple of grand kids to buy one...lolCorrect sir!
LeD PanelsDo you have any experience with LED's? All I know about them are they're expensive, I would have to sell a couple of grand kids to buy one...lol
LeD Panels
They have inferior light penetration to HID but more efficient for more compact grows. Some run cooler but dont believe the cheapo panel producers liker mars. Theyll be just as hot as an HID.
The best bet as far as LED goes in my opiniom is Chips-on-Board or COBs, search COBs in the forum to learn more about the best in DIY lighting. These are home built high wattage systems that blow LED panels out of the water.
so i supposeThe metal halide has a nice blue spectrum and will look more like a regular light bulb.
Like this
View attachment 579469
And the HPS is like this.
View attachment 579470
ok, I can see now, I think, why you use mh to grow and HPS toThe metal halide has a nice blue spectrum and will look more like a regular light bulb.
Like this
View attachment 579469
And the HPS is like this.
View attachment 579470
From what I can gather HID's have far better light penetration than anything else out thereLeD Panels
They have inferior light penetration to HID but more efficient for more compact grows. Some run cooler but dont believe the cheapo panel producers liker mars. Theyll be just as hot as an HID.
The best bet as far as LED goes in my opiniom is Chips-on-Board or COBs, search COBs in the forum to learn more about the best in DIY lighting. These are home built high wattage systems that blow LED panels out of the water.
I agree 100%. For that 3x3 a 250 would rock. @FrankieCoste gets an oz or2 off autos in soil inside a 2x4 cab with a 250 dual spectrum. My tent/ closet is open when the light is on until I invest in a inline fan and exhaust but the smell is managable with just a plant or two.Ive flowered under fluoros and HIDs (mh/hps) and the HIds are worth the extra effort in my humble opinion.
J is correct youve got'em backwards there.
No matter what you use you will fight heat. The heat from a 250-600 will be comparable or the same as equal amounts of anything else. Saying that I font have experience with led. I'm running a 600w in a 2x4 and maintaining 75ish at the tops. The hid allow you to keep the heat further from the plant. But do put off more heat, IMO its worth the trouble. Like I said to get close to same results with any other light source its gonna be just as big an issue with heat.So using hid lights in a 3x3 tent 72" tall what wattage should I use? I know you said 250 but is that for both growing and budding? Each light hps and mh 250 watts?
With dual spectrum bulbs you don't switch at all, they are hps and mh inthe same bulb. Like a 1kw dual spectrum is 600w hps and 400w mh in the same bulbIf you use one color to veg and another to flower where does the dual spec come in?
Managing heat.Gotcha!!
Managing heat.
Whole space.
View attachment 579473
Air intakes (intakes are low because hot air rises, you want to intake the coolest air in the space. The upper one is for my light, the lower one is a passive intake for the room, i chose to run my cords here and mount my ballast remotely.
View attachment 579474
View attachment 579475
You can see in this second pic the ballast hung outside and where the intakr meets the top of my cab for the light.
View attachment 579476
Here we see the intake on the right for the reflector hood which contains our light bulb. This is sealed passing the cool air through the hood and the warm air is extracted out on the left hand side. The white cylinder in the upper left is the carbon filter which eliminates odor. This is where air is extracted out of the room for air exchange for your plants.
View attachment 579477
Better shot of the carbon filter.
View attachment 579479
Last pic shows the fan hung for the light, the one for the room is just out of sight. The ventilation runs outside of the room my box is in and dispersed.
That looks a lot like my last grow. I was in a 4x4x8 tent but exact same principle. Before I ended up moving I was about to build a 8x10... I'll get back to that point some time.Managing heat.
Whole space.
View attachment 579473
Air intakes (intakes are low because hot air rises, you want to intake the coolest air in the space. The upper one is for my light, the lower one is a passive intake for the room, i chose to run my cords here and mount my ballast remotely.
View attachment 579474
View attachment 579475
You can see in this second pic the ballast hung outside and where the intakr meets the top of my cab for the light.
View attachment 579476
Here we see the intake on the right for the reflector hood which contains our light bulb. This is sealed passing the cool air through the hood and the warm air is extracted out on the left hand side. The white cylinder in the upper left is the carbon filter which eliminates odor. This is where air is extracted out of the room for air exchange for your plants.
View attachment 579477
Better shot of the carbon filter.
View attachment 579479
Last pic shows the fan hung for the light, the one for the room is just out of sight. The ventilation runs outside of the room my box is in and dispersed.
That looks a lot like my last grow. I was in a 4x4x8 tent but exact same principle. Before I ended up moving I was about to build a 8x10... I'll get back to that point some time.
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