Search results

I am familiar with johnson growlights. If they were more affordable I would consider, but I will be building myself. I am going to try a small test run with 5 or 6 CXB3590's. in a 5'x2.2' closet. I would like to get this going as soon as possible, and I was hoping I could get some help with...

as you can see, varying amounts of UVA are emitted by HID bulbs. As far as what that means for plants, its far as that means for plants, its hard to say for sure, but according to their mcree curve+UV and IR graph they based their YPF calculation on, it looks like plants can use large amounts of...

So your running the CMH on gavita de 750? So they really will work on any de fixtures, being mainly 1000watters? Do you dim it down to 600, or how does that work?

yeah 1000w dimmed to 600 still burns way hotter than a 600w bulb on a 600w ballast. Which is why I wonder why/how this works in a 1000w ballast. AFAIK any other 600w bulbs will not work in this manner, but I have not tried.

No offense taken. I'm glad you are there to tell people that wouldn't work that way. Cool, Have you found out any intersting data on them? Edit: sorry, your second and third posts didnt show up for me right away. Are you comparing to a 600w solistek 4k, or a dimmed 1000w? I assume the heat...

if one lamp dies the circuit is broken, assuming you wire them in series, which you would need to split the voltage I think. When the circuit is broken it has the effect of powering the other bulb down. ballast would be running still, but nothing to draw power from the other end, may make it...

HA, cool, two CMH arc tubes in a DE sleeve. I never would have thought of that but that's awesome. I though you meant they were putting two separate bulbs in a DE fixture, hence the 1 wire comment. What I would be worried about is its supposed to be 630, so what kind of ballast do you use...

are you sure, that's really weird, because de sockets only have one wire and a clip that i wouldn't trust to hold a bulb from one end. How do you fire a bulb with one wire, thats what i wanna know, ahaha. I assume you need a special ballast anyways, and its not like DE hoods are cheap or...

Thank you for all the info, really gives me a lot to think about. I like the idea of 4" inline duct pulling outside air, with an old cpu cooler, mounted inside the ducting, and then sealed in order to only expose the LES, for each COB, and then exhausting the heat back outside, to create a...

For all you DIY COB builders, as in @ttystikk @Airwalker16 @REALSTYLES @Sativied and anybody else doing the DIY COB thing, or even non diy, people if you have some significant insight on cooling, I have a few questions. I am considering starting to take up the CXB3590 platform, on a medium...

I have heard CMH, CDM, and Lec, but CDL is a new one to me. my bad. I wonder how many more different names they will come up with for the same thing. Most people will have trouble hitting 1.5 gpw with any sort of SE HPS and non specialized MH. Its tech from 20 years ago. If it were possible...

haha seriously.. those are some bold claims. and nearly $2000 for 4x4 footprint. wow "The MAX600 high power LED grow lights feature a simple plug-n-play installation. And, like our entire line of full spectrum LED lights, MAX600 uses very low electricity, just 125 watts (1000watt HID...

First off I think you mean CDM, not cdl, and please don't take any of this as an attack on you personally. I'm not sure what kind of MH you were using, I know a lot of people have tried various hps/mh combos, but that is very different when you are talking about a regular old SE HPS, and a...

we will have to see what gpw can be done with a DE + supplemental, vs all 3100k cmh. but you guys are using way less overall watts in a given space. it will be interesting to see if the extra power draw from the supplemental brings down the gpw of the DE significantly enough to make the all...

Very good point. Many folks think that the spectral output degrades at the same rate no matter who made the bulb, but I have an old HPS-Retro-White thats still going strong, made in 2011. not exactly sure how much use is on it, but im sure its significant. still outperforms any 400w mh I have...

Pretty impressive. Congrats on getting that beast up and running!! What I am trying to discern, is if there are real advantages to running say 5 (fairly expensive) 315w lights, when compared to simulating the spectral output of CMH with for example 2 DE 1kw lamps paired with supplemental 1000 or...

nice!

I have been looking at those as well with much interest. Not quite ready to scrap my current DE drivers, but they are certainly a nice looking setup, for a very fair price, considering the alternatives. Let us know how it works out!

HAH so much for MIT. This sure makes them look smart, lol. When I first read that, of course I had smoked some good shit, so when they threw out that idea that 95% of the energy is being "lost to the atmosphere" I am thinking, they are talking about energy losses on all levels, from the bulb...

This monster COB you speak of is certainly interesting. Is the issue coming up with a cost effective DC power supply that big, or are you saying that it would be too much concentrated light from one source, which would likely do better spread out in a bunch of smaller chips like you described...