cmh

  1. Yesyes3000

    What yield do you pull from a 4x4 ?????

    Hello all ! Me and a friend are looking at different t options for tents and thinking of useing 4x4 tents in different rooms. Be that as it may .... could people share what they have gotten for yields from 4x4 ? Please include what type of light, how many plants, and growing medium please ...
  2. B

    240v CMH HELP!!!!!!

    I just purchased a new 1000w CMH light, the ballast says 240v only. I went out and bought a nema 6-20 receptacle and a double pole 240 and some 14/2 wire. I ran and mounted the receptacle 6 feet away from the panel, hooked up the two hot lines on each pole on the 20 amp breaker and grounded the...
  3. M

    CMH/COB LED combo 5x5 tent?

    Greetings riu! I'm adding a 5' x 5' tent to my area, looking for advice on how best to light it up. I need relatively low heat of LED, but also want to take advantage of the UV and other benefits of ceramic metal halide. Buildasoil has a combo deal with a 315w CMH + (4) x 100w COB fixtures...
  4. Tonaloc989

    CMH or LED a Question on Lighting.

    Hello all, It is my first time growing in about 8 years and I was able to but a more complete grow room setup than I previously had. But as we all know mo' money, mo' problems. I have a veg and flower area set up and I am currently using my 315w CMH as my veg light and a "1200w" equivalent...
  5. SilentBob024

    8x8 grow tent advice needed

    So I'm using a grow tent now. Figured I'd give that a try. However, before I make my switch into the tent I'd want it set up properly. Trying to decide. For air intake and outake if I need a 4",6" or 8". I got a good size dehumidifier, I'll be getting a carbon filter soon enough. I go t some...
  6. PadawanWarrior

    CMH Setup, Day 35 Green Crack and Golden Goat.

    Green Crack is on the left. I put it through hell earlier so that's why it has some dying leaves. Green Crack Golden Goat
  7. Lucky Luke

    CMH 630w DE thread.

    Don't think we have a dedicated thread for these lights so I thought I'd start one I'm running the Hi-Par and am very happy so far. Anyone else running a 630W DE CMH?
  8. zeus2025

    LEC CMH leaf deficiencies

    The leaves are all droopy and yellowing followed by brown spots on the leaves. This happens when the introduction of the CMH happens. Switching fully to CMH but want to know how to remedy. This has happened on the last 3 runs. Even though the plants look like crap they still finish better than...
  9. H

    Would like your input

    hello I recently got my medical growers licence and I will be setting up a 10x10x10 grow room using soil and the no till organic method to grow using smart pots, I was looking to go with 4- 630watt cmh in the room so that I can fill the room with plants and just have a walk ways in and down...
  10. DustyDuke

    My Weed Growing Journey

    Been wanting to start a grow diary for a while but wanted to start it from day one. Im starting to grow three seedsmen strains, which I will turn into mother plants for clones. They are Black Sugar, Badazz Cookies Og, and Nothern Soul. I will also share the other plants I have growing. All the...
  11. F

    CMH X LED GROW SHALL I MOVE PLANTS AROUND ?

    Hello all thank you for help in advance Basically I am wondering if I should move my plants around my tent as one half is covered by my Electric sky 180w and the other my 350w cmh I am wondering would I be better leaving them as they are for the duration of flower or shall I move them around...
  12. berrybongwell

    Original Diesel, Northern Lights, and OJ Kush

    Hi guys, wanted to post up my grow and keep it updated on some sort of forum, and this one seems as good as any ;) -5x5 tent -Ceramic Metal Halide: 630w -COB LED Lighting: 230 actual watts -Soil -Compost Teas, Recharge, Photo Plus, and Silica, (veg) thus far. Will add liquid nutes later on in...
  13. Logan Burke

    Required CMH Wattage Per Square Foot?

    Hello everyone, I was just curious if anyone around RIU knew how many watts of CMH lighting per square foot is ideal? I am starting up a new, quite small vegging tent and am curious if a single 315w CMH fixture will be adequate. The tent size is 2ft x 4ft x 5 ft tall. Appreciate any and all...
  14. Renfro

    Different pH for different lights? HPS / MH to LED / CMH

    I am looking for input from growers that have switched from old school HPS and Metal Halide to LED and CMH. So I have had my veg room running for sometime and it was all dialed in. I haven't changed anything EXCEPT for the lighting. When I changed lights I measured light intensity at the...
  15. Piffestbuds

    Led help

    So I’m need of some help with choosing LED equipment. (I have no clue where to start). For starters I currently run 2x gavita 750de 2x dimlux 630de in a 2.4m2 tent. I want an led fixture that can replace the two gavita lights so around 1500w min. I’m normally quite good with researching...
  16. Deltagreen

    630w cmh SOG hydro grow Part 2

    This is the start of my 2nd grow with my CMH light. I have 7 Wedding Cakes, 6 Purple Punchs, 1 Peyote Critical, 1 Blue Gelato 41, and 1 Cheese that have been germinating for 2 days. They have all opened up and I'll be setting them in 1.5x1.5x1.5 rockwool cubes. I will do my best to log my grow...
  17. Cypher11

    Lighting for a 3x3

    I've been outdoor growing for a couple year. But now that legalization has come into effect here in canada I'm shifting to indoor. I have a 39x39 tent I was originally planning on just tossing in 315cmh and calling it good which would cost me less the $350 to light. But the more time I spend...
  18. A

    CMH 315W on Sonlight 4D digital ballast 600W HPS power supply (PSU)

    Same as object, can i buy E40 adaptor to T12 to light up a Philips 315W greenpower CMH lamp? If not, why? Thank you.
  19. ThePsilocyber

    630w CMH Vs 1000w HPS

    working with about 5000w lighting and 2k$ looking for biggest yield
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