I think Heather may have embarrassed herself
Another great side by side idea!alright this thread finally convinced me switching to cmh for the next grow.
I'm about to replace a 600W Philips GreenPower
What would you guys prefer? 2x 315 CMH or 1x 630 DE CMH?
I have 3100K and 4200K to choose from.
alright this thread finally convinced me switching to cmh for the next grow.
I'm about to replace a 600W Philips GreenPower
What would you guys prefer? 2x 315 CMH or 1x 630 DE CMH?
I have 3100K and 4200K to choose from.
A single 315 is in no way comparable to 600 watts of hps. I ran one along with 200w of supplemental LED and it only yielded two thirds of what I normally get in the same setup with 600w of hps. I now run 2 x 315 in the same setup and it is about equivalent to my hps in terms of yield. The plants stretch much less, the buds are more leafy but have better frost and terps. As expected, heat output is about the same as wattage is similar.I also really want to see a side by side with a single 315 in one tent and a single 600 hps in another. I've heard that the cmhs work better when the 315s foot prints overlap like issack's setup.
Not sure if that changes anything but it would be cool to see if yield is as drastically different.
It depends on your application. In most cases multiple 315s are preferable, however if you have the headroom and the money, Growers Choice as well as Nanolux make 1000w DE CMH. These are extremely powerful but have about a third of the lifespan of 315w bulbs. This is because each ceramic arc tube is a slightly different voltage from the next. When they're in series they all receive the same voltage which overpowers one (not enough to see) and causes premature deterioration.
Multiple points of light create less hot spots and improves canopy penetration. Currently no 315 bulb even comes close to the output of the Philips Greenpower Agro 930. From all I can gather, a whole bunch of vertical 315 Philips is the way to go, and also the most expensive. We've settled on the same ones Isaack and SG have, Nanolux 630. Good luck!
Oh, BTW, there's a sunplix de 630 cmh on Amazon for $146! No shit.
I've been rocking 2 630w de cmh in a 5x9 gorilla tent for over a year now. These lights are killing it. Great penetration, less heat to deal with vs hps, and the plants love it. No problems exceeding 1gpw even with multi strain grows.
A single 315 is in no way comparable to 600 watts of hps. I ran one along with 200w of supplemental LED and it only yielded two thirds of what I normally get in the same setup with 600w of hps. I now run 2 x 315 in the same setup and it is about equivalent to my hps in terms of yield. The plants stretch much less, the buds are more leafy but have better frost and terps. As expected, heat output is about the same as wattage is similar.
You have to be kidding? A 600w hps puts out 90,000 lumens whilst a 315w cmh only produces around 30,000. I would not waste an entire grow cycle on this when I have alreasdy done it with the inclusion of supplemental LED, and it still failed to compete. Maybe it's your turn to show us what they can do?What I'd like to see is one of these people claiming cmh can't compete with hps, like heather or natural, to document a side by side to show us all why they weren't able to get the same result as issack. I think THAT would be an interesting read!
CMH are not miracle lights and they lack serious horsepower as a stand alone light.