GreenThumb14
Member
http://www.ecomagination.com/the-everything-bulb-can-an-led-change-like-the-sun
Short read but pretty cool info about LEDs...
Short read but pretty cool info about LEDs...
GreenThumb14
Member
I'm using a 250w for 3x2' area in a cab and I'm not sure it'll be enough. However, I want to veg quicker so throwing more light in should help if all else is good and also for flowering.
So, probably depends on how long you plan to veg for and how much you want to yield.
I'm probably going to add a 150w cmh to my 250w hps-retro white, should give excellent results.
GreenThumb14
Member
Personally, I'd go for more like 400w if I was you. I've yet to use one of these setups, though... So hopefully someone more knowledge will chime in and give their advice. I've just been on the side of too little light too many times now because I under estimated things.
U
unthing
one more thing. does anybody have pics or knows what happens to those double glassed "open rated" cdms at bulb failure? does the glass contain the explosion or not? i just think that to be able to run them without closed hoods would give more versatility of application.
GreenThumb14
Member
I've seen a pic of Philips retro white that blew and the glass contained it. From what I've learned, Philips is the most trusted when it comes to running open fixture. If they say it's open fixture rated it is and it won't breach the outer glass.
i had one go on me but it wasn't an explosion, just a fracture in the ceramic connector and poof it died without drama.
I considered building a ballast kit. I wired my own room, afterall. Then I thought twice about it and spent the extra $100 on a ballast that comes with a warranty and required 5 minutes between unpacking and use.
5g-7g to pay for the difference. My time is better spent growing than tinkering with ballasts.
YMMV.
5g-7g to pay for the difference. My time is better spent growing than tinkering with ballasts.
YMMV.
28 days with the CDMs. I'll try to get better pictures after lights out - I can't believe that I can get better pictures under leds/fluorescents than I can these, but..... They are so goddamn bright that I turned them down to 50% for these pictures and they were still washing out. Need more experience with it.
In the second picture, that bud is about 4" long. I think that the onset of flowering started a couple of days later with these than my hybrid fixture, but if this continues, it looks like the buds are going to be substantially bigger.
In the second picture, that bud is about 4" long. I think that the onset of flowering started a couple of days later with these than my hybrid fixture, but if this continues, it looks like the buds are going to be substantially bigger.
In my case, that $100 is a pretty huge barrier. My time is cheap.
GreenThumb14
Member
GreenThumb14
Member
Not much to see here, but if anyone was wondering...
The inside of an Accendo 250W low frequency digital ballast...
The inside of an Accendo 250W low frequency digital ballast...
The picture I've seen was at the advanced tech lighting page.
Here's a link - it's at the bottom of the cmh fact page:
http://advancedtechlighting.com/cmhfact3.htm
I'm wondering where you purchased this? Can't find anyone online who offers these. Or if you're in the states, do you think I can just
have a local lighting supply shop order me one?
The 400W works well in my 2'x7' veg area.
GreenThumb14
Member
How well? What type of yield do you get and what method of cultivation do yo use?
