Cob or cmh?

[Blazed227]

Ok so right now I'm runnin 2 600 hps, an bout to put the girls into flower but just came across a good bit of money an was thinking of switching lights.. main reason is because of the heat from the hps an I'm running my grow in a shed.. now it is insulated an all but worried about those 100+ days.. got the ac installed but haven't needed it yet.. anyway the lights are vented but my concern I wanna get some chm but havent seen an air cooled good for them.. do they not run very hot or somethin? Would like to grab 3 315s or 2 630s . Or do u think my a.c. will be running overtime trying to cool them? 5500 but window unit that I custom built into the wall ( an no the outside vents aren't covered) so if the chm are gonna run got I may just go with some cobs... just don't wanna spend the. Money on the cobs lol

[Green75]

Heat is very very minimal...I would suggest the 315 or 630

[gbauto]

Green, do you know what's the typical efficacy of the CMH? That seems to be where led's can be better.

[Green75]

What do you mean..

[OzBud]

from wikipedia: Luminous efficacy is a measure of how well a light source produces visible light. It is the ratio of luminous flux to power, measured in lumens per watt in SI.

So basically how many lumens per watt does the 315 put out?

[Green75]

http://growershouse.com/blog/cmh-315w-lamp-comparison-test-data-review/

[Green75]

This is one I refer to alot.. There are so many out there

[Blazed227]

Thanks for the info green! Appreciate it.. an actually seeing your grows is what's got me wanting to get some cmh's . Well that's what got me doin research on them anyway 🖒🖒🖒

[PuravidaC]

Yep, it's all Green's fault that I am the proud owner of a 315 LEC too!!! 😆

[Blazed227]

How do u like it?