CXA3070 DIY

Mechmike

Mechmike

Well-Known Member
nvhak49 said:
Yeah Im thinking I'll stay around 700ma, how many cobs would be equivalent to a 400w HPS?
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The Vero 18 3500k at 700ma outputs ~2600 lumens. 15 of them makes ~39000 lumens. That's ~130 lumens/watt. Around 300w total for a light far better than a 400w HPS.

I am using 15 Vero 18s over 2x3 ft. They are usually dimmed to about 500ma. I also run my light about 5" off the canopy and use a mover. At 700ma I would want 10 in my space. Here's a picture of the light in it's early form. Now it has Meanwell HLG series dimmable drivers and the emitters between the Veros have been replaced with Cree XPLs.
 

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nvhak49

nvhak49

Well-Known Member
Dang sweet light man I like it a lot. I just want to get away from his and go full led soon. Project in the making.
 
happy75

happy75

Well-Known Member
nvhak49 said:
It's been pretty cold up here in Alaska right now 2 degrees F and my tent is in my garage so that's why I can't go 100% led Cuz it's like 50-58 in my garage with me lights on and it's around 70-75 with lights on with my exhaust fan going 25%. I'd just like to go cobs Cuz I know they use hardly any energy but than again Id have to get a heater so I dunno if that would equal the watts I'm using now with my vipar600 and 400w hps.
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I know your problem. I have the exhaust often off because there is too little heat in my growroom, otherwise I run the exhoust very low like you. Could you isolate your room more? A tent does not isolate very much. Maybe wrap it up in styrofoam to keap the cold outside the tent.
 
nvhak49

nvhak49

Well-Known Member
happy75 said:
I know your problem. I have the exhaust often off because there is too little heat in my growroom, otherwise I run the exhoust very low like you. Could you isolate your room more? A tent does not isolate very much. Maybe wrap it up in styrofoam to keap the cold outside the tent.
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I didn't even think of that! I could probably try that I'd lose my reflection Mylar that's in my tent now but I could try the foam that has that on it too.
 
X

x.man

Well-Known Member
Hello nvhak49. I grow in a 4 x 2 space and I use 8 vero 29s. I drive them using the 50w ebay drivers. Grab them while you can. They sell out like hotcakes.

http://www.ebay.com/itm/50-W-Watt-High-Power-LED-Driver-AC90V-265V-50-60HZ-Waterproof-/181578939219?pt=LH_DefaultDomain_0&hash=item2a46f2bb53

to keep the heat in my room, i use a thermostat to control my exhaust fan. it only turns on at 72F.

http://www.amazon.com/Lux-Heating-Cooling-Programmable-Thermostat/dp/B000E7NYY8/ref=sr_1_1?ie=UTF8&qid=1422728240&sr=8-1&keywords=win+100
 
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