cmh

which is better? how many cmh= power of 1000w hps

Hello all, starting my grow journal so I can keep track of my grow and thought this would be a great place to start. Here's my set up; 5x5 grow tent 630w cmh dual bulb grow light 16 Animal Cookies clones 8" 780 cfm inline fan with speed control Charcoal filter Using open ports as passive air...

If this has been talked about in previous threads, I'm sorry for the reoccurrence, I'm building out my room for flower and I've come to a standstill with choosing the correct light for my build. my space is a 18' x 16' sealed/insulted room with an a/c unit and dehu to control the environment as...

As of now I've been reading for a few months but haven't bought any equipment. I'm ready to start purchasing! I was thinking of possibly running 3 315 CMH in a 4x8 SCROG grow.... any advice or tips would be greatly appreciated!

Hello RIU Welcome to my journal.... Let me tell you about my setup. I am currently doing a perpetual flower and veg room. My flower tent currently has 2 260w diy kits by HLG one 3000k one 3500k kit. I have only recently installed these so I am excited to see what results I get from these...

So first time, long time... been on here for years (overgrow/icmag) on and off and never really took the time to do one of these... please good vibes only ... so some things to know... Lights: NextLight Veg8 LED - 190w -(I’m using this for veg only) [a 454w 8bulb T5 is what trying to do more...

I am looking for a CMH light to upgrade from an HPS but all I hear people talking about is the Sun System brand. Are any of the other CMH's any good or is it all cheap Chinese crap? I'd like to hear from someone with a firsthand (or secondhand) experience.

I've been away for a few years and am happy to be back. For those of you who followed my previous work, this will be a dramatic departure from my typical sea of green adventures. I will be starting off with between 3 and 6 plants and will pick the best one according to appearance and smell...

So my first attempt at growing with a CMH/LEC I nearly lost my whole crop. With in 2 weeks of sending into flower I had all sort of deficiencies showing and at 4 weeks decided to flush as plants had locked and switched back to a HPS. Ended up helping alot but my yield was still affected. I came...

Hey whats up guys ima put 4 cmh lights with ushio bulbs on each side of the tent 4x4 so thats 4 lights for the area might be over kill but ima see if i can increase yoeld with that or if it will be too much for the plants. See what kinda quality it pushes or if it proved to much light stress. I...

Just setup a 32x32x63 flower tent and was wondering how good of a setup it would be to mix a mars hydro 300w with a 315w lec light with the phillips mastercolor 3100k bulb. Any suggests would be helpful mantaining a temp of around mid 80's.

Is doubling up the wattage with the 630's worth it in a 4x8 or will the 315's get the job done? Does anyone have any recommendations on any of the brands offered on amazon?

My buddy just grabbed some of these last night and gave me 2. Will fully document this grow from seed to harvest unlike my other grows since this is supposed to be fire lineage (iunno, im just a noob to all of this) and i can put a brand nane/lineage on this grow vs just showing off my cool...

Hey guys, Since switching to LED's i have been fascinated with how well they have worked for my plants; The density, Temps and the different hues that the LED have influenced on the leafs (Greens,Blue,Black,Purple,Lime) Upon this change i was very happy but over time have noticed that weed...

Hey Rollitup! I wanted to thank the Administrator as well as you bloggers for allowing us to join your community! We're here to assist however we can: plants, equipment, specs, design, layout, functionality issues, new ideas, techniques, and opportunities etc. etc. For those of you that have...

Hey Guys, Just flipping some JOTI Blue Cheese under my new Hybrid light 400w HPS/315w CMH. 3 plants in my 3x5, 3 more of another strain will join them in about 4 weeks. Should be an interesting grow.

Hey fellow growers So I have a question regarding CMH lighting.I have looked on the internet and thru the post on riu and see there are some common opinions on things like bulb choice,bulb placement etc.These may seem like very silly questions but before I spend more $ (which I said I wasn't...

https://www.growlights.ca/growlights/315w-cmh-ceramic-metal-halide-kit.html has anyone bought this kit? just wondering if the light will work out of the box, or will I need to get something to power it with. I know it sounds like a dumb question thank you!!

I had to remove my two plants from the 2.5x5x6 tent they were in because I was out of adjustment height. I have them under the same 400w custom built LED, but am concerned they may not be getting enough light since it no longer is getting the reflection from the sides and bottom. I have a...

I am looking at trying a run with 630w double ended CMH's. I have a table in the open (not in a tent) that is 3x12. I figure that 3 - 630w CMH should do the job here. But with a few reflector designs available, i am unsure which one would fit my needs. They don't really give a whole lot of...