Club 315 Cmh

StandingRock · Oct 20, 2017

Bigjuice said:
ok its just ive read afew posts someone swapped 6000w hps with 2850w cmh and reckoned he was getting more weight and someone else swapped 1800w hps with 1260w cmh and getting a little extra is tbis not the case then

There's about a million variables in a grow room, but I'd say you'll love the CMH after using HPS. I think we have about 9 pages of people saying this lol

MIMedGrower · Oct 20, 2017

Bigjuice said:
ok its just ive read afew posts someone swapped 6000w hps with 2850w cmh and reckoned he was getting more weight and someone else swapped 1800w hps with 1260w cmh and getting a little extra is tbis not the case then

No it is not. The 315 can do more per watt but has a smaller footprint. You would need 3 315's to 2 600 hps'.

In my tests it yielded the same as a 450 hps. I can get a pound out of a 3x3 area with a cmh but have gotten 24 oz from my 600 hps in a 3.5'x3.5' area. And the hps makes denser buds with a better leaf to calyx ratio. And while the bud and plants looked frostier and more colorful with cmh I have gone back to hps only and potency is higher with the higher wattage hps.

I will likely use 2 600 hps to 1 315 cmh over a 4x8 area next build. Benefits of both lamps that way.

Seems to do what my 600 "blue" metal halide does but with less watts in a slightly smaller area. But they are better compared to one another than a good Hortilux super hps.

DemonTrich · Oct 20, 2017

Went from 1800hps to 1260cmh and get the same or better weight and better quality now with cmh

heisen · Oct 20, 2017

What was said already about every grow room is different so results can be all over the place.
The only thing I can say is cmh shines where canopy is more even.they really don't have much penetration like a high watt hps.so people who grow trees might not like cmh.
You may need more bulbs and some vertical lighting if you plan on growing taller plants or hoods with more direct footprints.
I think cmh are a scroggers dream cause you can add more lights as the same wattage of a bigger hps and get more even coverage.
Heat is about the same unless you air cool.
My 2 open bulb cmh put out a little more heat than my air cooled hps.
There are a lot of variables.
If I had 12 foot ceilings I would probably go to 1200 watt DE gravitas and grow 7 foot plants straight run no scrog to get football cola's in dwc.
Every light and fixture has a place

heisen · Oct 20, 2017

I'm working on building a bigger sealed building that will be 12 foot ceilings with open lit gravitas.
I love cmh I just don't see how they would benefit on 7 to 8 foot plants.I'm planning on running 27 gallon waterfall totes.
If CMH can ever get its shit together and come out with dedicated 1200 watt square wave ballast and good bulbs I would stick with cmh.it would be fucking daylight indoors.
Seems like cmh is a little behind on technology

StandingRock · Oct 20, 2017

heisenbubble said:
What was said already about every grow room is different so results can be all over the place.
The only thing I can say is cmh shines where canopy is more even.they really don't have much penetration like a high watt hps.so people who grow trees might not like cmh.
You may need more bulbs and some vertical lighting if you plan on growing taller plants or hoods with more direct footprints.
I think cmh are a scroggers dream cause you can add more lights as the same wattage of a bigger hps and get more even coverage.
Heat is about the same unless you air cool.
My 2 open bulb cmh put out a little more heat than my air cooled hps.
There are a lot of variables.
If I had 12 foot ceilings I would probably go to 1200 watt DE gravitas and grow 7 foot plants straight run no scrog to get football cola's in dwc.
Every light and fixture has a place

You got it. I put reflective material along the sides and that really makes a difference with lower buds.

heisen · Oct 20, 2017

StandingRock said:
You got it. I put reflective material along the sides and that really makes a difference with lower buds.

I don't get why they havnt come out with a dedicated 630 watt cmh bulb and a dedicated square wave ballast.or even a,1200 watt cmh setup with a dedicated cmh ballast would take the industry to the next level.

Bigjuice · Oct 20, 2017

i grow just over 5 foot plants ive swapped 2000w hps with 1890w cmh with cross lighting will cmh be no good for 5 foot plants ?

will cmh penetrate right to the bottom of a 5+ plant

DemonTrich · Oct 20, 2017

Vanquish has a 630 now. It's 50.00 more than their 315cmh set up.

And x2 on canopy. I went from hps and staking to cmh and trellis netting. Same yields if not.more now. And saves 10hrs staking 16 plants every run. 5 mins to throw a net up.

DemonTrich · Oct 20, 2017

Bigjuice said:
i grow just over 5 foot plants ive swapped 2000w hps with 1890w cmh with cross lighting will cmh be no good for 5 foot plants ?

will cmh penetrate right to the bottom of a 5+ plant

No

I grow.tall.plants, but I net. Lowers are lollipopped drastically. See my.many flower run threads.

Bigjuice · Oct 20, 2017

what plant heights would be optimal with cmh

StandingRock · Oct 20, 2017

Bigjuice said:
what plant heights would be optimal with cmh

Its not the height of the plant that matters, its where your canopy is. I'd say mine penetrate about 10 or 12 inches before I get popcorn buds that I would rather not have. My plants are about 2 feet tall but lollipop and topped many, many many times.

DemonTrich · Oct 20, 2017

heisen · Oct 20, 2017

DemonTrich said:
View attachment 751595

Man them girls are leggy
What strain

G gnome · Oct 20, 2017

Anyone try these yet?.....

https://growershouse.com/

Freshone · Oct 20, 2017

I have one of the Growers Choice 630de bulbs I'm going to try in a gavita next round,haven't seen the fixture you linked to before only the 315 and 630.Thats a trippy fixture for a good price.Growers choice has not been known for quality in the past which makes me a little cautious about their stuff.

DemonTrich · Oct 20, 2017

heisenbubble said:
Man them girls are leggy
What strain

Darlins net, gg4, chaos, mob boss, cheese, strawberries n cream, cannatonic 4 cbd, Bruce banner 3, god bud, grape og, chocoloco, mob fuck.

Leggy gets me 1.5gpw

DemonTrich · Oct 20, 2017

G gnome said:
Anyone try these yet?.....

https://growershouse.com/

That where I bought all my cmh stuff.

G gnome · Oct 20, 2017

DemonTrich said:
That where I bought all my cmh stuff.

Sorry....meant to link a 945 cmh d.e. bulb

G gnome · Oct 20, 2017

DemonTrich said:
Darlins net, gg4, chaos, mob boss, cheese, strawberries n cream, cannatonic 4 cbd, Bruce banner 3, god bud, grape og, chocoloco, mob fuck.

Leggy gets me 1.5gpw

I agree, leggy equals yield

Club 315 Cmh

Club 315 Cmh

StandingRock

MIMedGrower

DemonTrich

heisen

heisen

StandingRock

heisen

Bigjuice

DemonTrich

DemonTrich

Bigjuice

StandingRock

DemonTrich

heisen

G gnome

Freshone

DemonTrich

DemonTrich

G gnome

G gnome

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