cmh

What's the difference between those single 630w double ended cmh setups vs the ones with 2-315w bulbs

Hi guys! I'm have lots of experience with traditional HID systems, but none with ceramic metal halide. In my new cabinet I would normally use a 600w MH/HPS in a cool tube, but I want to try CMH to lower heat in the surrounding space. The grow space has floor dimensions of 56" x 30″ with an...

Hey folks quick question! Would you suggest I purchase The Sun systems neutron cmh reflector . https://growershouse.com/ceramic-mh-315w-lec-low-profile-stealth-package/reviews/#customer-reviews Or the cmh wing reflector package ...

So, I just built a 400w COB LED I am running in a 2.5 x 5 tent. I have a 315W CMH light sitting here doing nothing. Would it be overkill to run them both in that size tent? Will a 400W LED be enough on its own?

Top Dawg: White D Grow This will be the beginning of a journey, a journey to find that diamond in the rough. I have 20 regular seeds of Top Dawgs White D. -The White(f) x Star Dawg(m). Will start by soaking the beans in a water and hydrogen peroxide (beans have been stored for a long time)...

Hey there, I'm 5 days into flower now on my first grow and decided with the huge amount of pictures I've take I should share my grow. I've lurked off and on for a long time but finally decided to start up a grow a couple months ago. I appreciate any and all feedback - it's my first grow and...

I'm having trouble finding a simple explanation of the difference between the Philips CDM T9 and T12. Also, the difference between Agro and non-Agro. Can someone please explain it? I know someone already asked about this on here a few years ago but, I didn't really see any clear answer. Maybe...

Is it possible to use 3100k & 4100k bulb simultaneously in a 630w (315w x 2) unit? I understand 4100k is for veg and 3100k for flower. I figure broader spectrum with both bulbs in use. Anyone doing this or are most of you cmh users running 2 3100k in yours? Thank you for your inputs! Apologies...

I'm a first time grower to be. I'm in the final stages of renovating a 10'x11' room with an 8.5' ceiling. Got new drywall up and am finishing tape, texture, plumbing, and electrical. I've already started to get everything for a RDWC set-up, with the Current Culture Undercurrent system, a 630...

So here goes, I've completed a few grows now with mixed results, so I have decided to start a journal to keep track of what I'm up to. So I have a 4x4 for flower, 3x3 for veg, and a 2x2 for seedlings and cuttings. In the 4x4 I have the 315w cmh dual spectrum a 5 inch filter and exhaust fan...

Hi everyone, This is a completely fictional story I made up about growing marijuana for fun. I have never grown or smoked marijuana in my life. Any pictures I post are stolen from the internet. This is my first serious indoor grow. I'm growing feminized blue dream under a 315W CMH, 12" from the...

So I acquired 3 - 400w MH fixtures. The ones you see in a warehouse. I paid nothing for them, but they all work and have bulbs in them. I'm sure they ran the bulbs in them to death, these bulbs look pretty old and don't produce much light anymore. They have the old magnetic ballasts in them. I...

Hey Guys, Brand new to cmh but it's looking like the best way to keep temps in check and still get results close to that of a 600w HPS in a 3x3 space (supposedly the perfect coverage area for these lights). When I was looking at the 600W, I assumed I would have to get a 6" inline @~450cfm, fan...

High, So another Vero user :) older gen6 two cobs each @2000ma /3500K viz ledideal.cz Soil, aptus Bloom ferts(PK+topbooster+Camg) Cuts : Gorilla glue4 (left, now bit hungry) Alien chocolope (alien abduction indica VS chclp male)... And the little one is revegged noname called sour kush...

The Philips bulb comes in a 942 (4000k) and a 930)(3000k) Using them in veg and obviously the 942 is better with more blue but when I was running the 930 they looked alot more robust and generally bigger. I know the increase in blue in the 942 will keep them squat and promote side branching but...

Hey guys I have a few rooms, One of them is 11x13 with 6 Gavita 1000e's and 4 Gavita 270e's I have 12' ceilings but I think the 1000's may be too much, I usually run them at around 750-800. It has been almost 2 years on this setup and have been noticing my yield slightly dropping, I would like...

I'm planning on setting up 3 4'x9'x9' rooms. Each next to eachother on their long sides. I want the rooms a little bit bigger than the light footprint to give me some elbow room to work with hence the room sizes. 2 rooms will have 2 315 sun system lec each with Co2 alternating veg/flower...

I'm getting two tents setup. One will be dedicated to veg, the other flower. I'd love to get the opinions of anyone who is better than me (so that should be just about all of you). For the flowering tent, I'll for sure be going with my 715W COB LED. But for the veg tent should I also go with a...

Ok so I'm planning to start growing when its legal been wanting to do a 1k+ light setup for a while since i left California in 2012 and maybe ill finally have the chance if this vote passes. So with all the research ive came up with these, Can you all take a look and see if i picked a good...

For my next grow, I plan on going with Northern Lights #5 x Haze. From what I understand, the plant can stretch quite a bit with a large main cola. My grow light is a 315W CMH. I keep it approximately 18 inches away from the canopy. Does anyone happen to know what distance my light would be...