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  1. BudGinger

    Gingerbud's First Indoor Grow: 315 CMH, Tent, Lemon Thai Kush, Blueberry & Sour Diesel

    Hey there, long time creeper first time growing indoors. It's finally legal here in Canada and the wife okay'd the tent so I ran with it. I started from seed, germinating on November 19th, 2018. I'm fortunate to have a good friend who works in a hydroponics shop, so they've been pointing me in...
  2. O

    Wind Storm

    How can one tell if a CMH bulb is burnt out? During a storm our power slipped on and off a few times and when it came back on my ceramic light wouldn't work. Now question is, is it the bulb or the ballast?
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    Blew Hiller GH Grow 2018/9
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    Blew Hiller GH Grow 2018/9
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    Blew Hiller GH Grow 2018/9
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    Blew Hiller GH Grow 2018/9
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    Blew Hiller GH Grow 2018/9
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    Blew Hiller GH Grow 2018/9
  9. SmokeLake

    420’s 4x4 Soil 315cmh EarlyMiss Grow Journal 2018

    Hello this is my first legal grow in Canada. Im starting this journal to document progress and pick up tips and tricks. CKS Early Miss Auto Flower 5pk Peat pucks ( do not use for autos) ProMix HPCC in 3 Gal Root Pouchs 315cmh ballast running 4200k veg and 3100k for flower. 4x4x6 Mammoth Tent 4”...
  10. aerorev

    2018 light efficiency ultimate battle

    First post in the forum. I’ve been growing for about 16 years mainly outdoor. Started indoor a couple years ago using 1000w’s HPS’s with magnetic ballasts. Later on I switched to 400w Phillips HPS with Lumatek electronic ballasts for efficiency. I’m seeing a lot of discussion and...
  11. H

    Questions about Growers Choice 315w CMH 3K

    So just starting out on my grow. 4x4 with 4 plants in 5 gallon pots. What wattage and distance from the plant should the CMH be? I have 3 auto’s and 1 feminized that just got planted after germination.
  12. HayStack

    I'm trying out CMH

    So the other day I ordered at 315 watt CMH with a 3100k Philips bulb from Grow Co. I've never used CMH before, but I have heard a lot of good things about them. My current grow looks like it's going to be a nice grow, but the lower buds just didn't get any light and you can really tell by just...
  13. P

    Cropking White Cookie & Sour Jack Under 315W CMH - First Real Grow

    Hello all - Getting back in the game after a half-assed attempt at growing 5 or 6 years ago. Tried DWC with two plants in a 4x4 tent and some DIY HPS street lights rigged up. This time around I'll be using some better supplies and really work at doing this the right way. My setup: 1 -...
  14. M

    1st attempt at growing my meds - GG4 & Jack47

    Green-thumb newb here, greetings Wanted to share some photos of my first attempt at growing and perhaps get a thread going First thing first, the equipment: 4'x4' tent (thick 1860D material) 6.8' tall 1 x 315 CMH with Phillips Agro bulb 1 x Morsen COB full spectrum LED (two cobs) for...
  15. floridafinest

    Floridafinest 630CHM First Try At RDWC Grow Journal

    This is my first grow journal so please bear with me. 11x12 fully insulated wired and plumbed by me room. 6x6 mother/flower room 12- Sour dx Lemon kush 2- the white 2- pre 98 bubba kush:volcano-smiley: 4-630w dimlux cmh's DIY RDWC system 16 site 2" feed with dual 1" returns 1" rockwool...
  16. TheFertilizer

    Retro-fitting CMH lamps into MH ballasts

    Been reading around and I can't really find a straight answer on this. Now assuming for equal wattage, what's stopping a person from buying one of the socket conversions ( or finding a CMH bulb with an E39 ) and then running it in their usual digital MH ballast? I've heard that most of the CMH...
  17. M

    ChemLight - Week 4 Flower - Coco & Perlite - Single 315W CMH In A 2x4

    Hello all, I am currently in week 3-4 in flower. This is my first thread and my second grow. Things have been going very well. I am using.... -3 Chemdawg x Northern Lights clones from TGS in Denver, I have one mystery clone that was given to me from another dispensary in Denver, we will be...
  18. L

    CMH question

    I have an extra 600W ballast and hood sitting around that I want to add into my grow room. I need to buy a bulb for it as I only have a spare 400w hps. I am curious is my ballast able to operate a cmh bulb, and if so what kind would I need? I was at my hydro store today and I was told that there...
  19. G

    Ceramic Metal Halide Lighting Questions

    HI all I'm new to 420mag, but not a new grower. i have been reading the 420 forums for the last year also doing 2 indoor grows and also a successful outdoor harvest. I feel that I'm ready to step up my growing standards and dive into CMH! IN the past i grew with my 600 watt hps while using an...
  20. O

    CMH lighting

    Just finishing up with my 6'x8' grow room and will be needing to set up my grow system. wondering what everyones thought are on CMH lighting compared to HPS?
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