Monster Gardens
Active Member
Definitely less of a negative impact, again it's all about the temperature that the bulbs reach. So blowing ambient temps of 70F across the bulb would be a better option than the 20F outside air. Cheers!
630w cmh heat ?
- Thread starter Oregonhwy101
- Start date
DemonTrich
Well-Known Member
Yes, strain dependant. The strain I run all pull a min of 5oz per pot. My darling net pulls 6. If I run 12 x darlins net, do the math.
Oregonhwy101
Active Member
I see what you are saying about the science of it. I also look at this if bulb isnt running to its effeciency i may lose what a 1/4 to 1/2 oz thats what 40$ but i can easily make that cost up with air cooling and not using my ac little to none. But if you are talking the break down on bulb and will cause failur that could add up at 80$ per bulb
Monster Gardens
Active Member
Again, so many variables! I was only trying to explain the absolute most efficient path, but obviously, there are alternatives. Cheers!
cookie master
Well-Known Member
on de specifically bulb temp is a major issue. But he was referring to a 315 lec a/c room. I know its still an issue with lec and thats why they dont run the air across the bulb. I dunno if its true but i dont doubt his statement of 4 lbs off 1260 watts of ac lec
Monster Gardens
Active Member
Hey Cookie, I did reference DE's, you're right. However, the gas used in these lamps is all relevant (even though it varies) and heat is the primary driving force. Even if a reflector is built to remove radiant temperature, the chamber that the bulb is in will be cooler, thus the bulb will be running at a lower temperature. Now all of this is nit-picking, I know, but still factual and an important aspect to consider when selecting such an important component.
cookie master
Well-Known Member
Im curious, are you an official rep of monster gardens.com?
SchmoeJoe
Well-Known Member
A major difference between hps and CMH is that hps put out a whole lot more ir which produces more heat when it is absorbed by the surfaces the light hits.
Even if both bulbs were to run at the same temp the big difference in ir will still cause the same room with hps to run hotter than it would with CMH. It also means that the plants themselves would be at a higher temp with the hps.
Monster Gardens
Active Member
Great information Schmoe!
DemonTrich
Well-Known Member
Proof is always in the pics. Many non believers out there. I don' give a shit. Just ppl who need a 1k to pull my 315w weight. Pic is week 5 from flip. NO pgr, 1400ppm co2. Elite elite genetics.
Logan Burke
Well-Known Member
Am looking at getting either two 315's or one 630w cmh right now, and I was wondering if anyone knew why Sun Systems discontinued their AC 630w light fixture? Is it simply because they came out with a newer model or is something flawed? By the way, your ladies look so amazing Demon!!
SchmoeJoe
Well-Known Member
Sunlight has a lot of models that come and go. The 220v t5 fixtures are a great example. I think that it's usually just a matter of consumer demand.
Logan Burke
Well-Known Member
Ah ok thank you Schmoe! One more question if ya don't mind, does anyone know if Nanolux makes an open-hood 630w fixture? Or is it really not necessary just for the purpose of heat control? I'm running a 6.5x6.5x6.5 tent with a 800-900cfm (can't remember exactly) inline fan as the exhaust. Based on what I've read here I may very well need more than 630w of cmh lighting and don't want heat to be an issue as my 1000w HPS has had bad heat problems this grow. Thank you everyone!