Search results

No. Im trying to deliver a certain PAR level to my canopy covering a 4' x 12'. Just trying to determine the proper spacing/number of COB's needed to get there.

No need to apologize, I didn't mention any details. But since you ask... This is preliminary testing to cover a 4'x12'ish space. And there will actually be 4 COB's per rail instead of 3. So a 4x3 arrangement. 48"x36" Vero 29 3500K @ 1.4a Meanwell HLG-185H-C1400B (will be dimmable) Artic Alpine...

Still doing some testing on the spacing of the COB's.

I work at a grow store and Nectar is one of the lines that we sell. I also personally use the line. Not sure which IG you were looking at but I have seen some fire in person and online grown with this line. There is a dispensary that uses only Nectar products and they have personally grown some...

Those plants in the video were pretty massive (5-6') and had tons of room to grow vertically. They were not nearly as limited in terms of their growing space. I didn't see the plant count but if any of those plants yielded between 4 and 6 oz, I could see that yield no problem (if the intensity...

Would or does? So much speculation

If you are are ordering in the 1000's the XM-L2's can cost between $2-$3 per chip... Maybe less if your company is endorsed by Cree...

How were you able to determine that SK uses XB-D's? And please don't say because that's what comes on the Alibaba high bay. COB's aren't always the cheapest option, certainly not the easiest to put together, and certainly no easier than buying a store bought product. If efficiency is #1, lots...

Plants look great!

Did some more playing around with the Cree (PCT) and found some interesting results. So the XM-L2 in the higher/highest bins produces over 145 Lumens/ Watt @ 700 ma 50 degrees C. SK claims to use 200 diodes on the SK400. If they did use XM-L2's then I could see 200 of those within close...

Sounds like that light is using XM-l2's. Are we positive that the SK uses XB-D's and not XM-l2's? That would change things quite a bit if they did...

That is an incredibly presumptuous remark. Completely dependent on a list of variables almost too long to write down.

Maybe they were trying to use reverse psychology marketing... Tell you that you don't want one so much that you get one out of spite haha

I think the LED section of RIU is dedicated to more than just DIY lamps... And I also believe that the OP started this thread referring specifically to SK yields and whether the lamp was worth the money or not. (Then they disappeared never answering even very simple questions about the grow...

I completely agree with that quote. I'm also tired of all this efficiency talk when its mostly theorized calculations based on individual diode performance.. from a data sheet. To me, gardening efficiency should be based on a Grams Yielded/ Luminaire Watts Drawn. Electrical efficiency is pretty...

It's pretty high above the canopy right now.. I just chopped off about 16" over the weekend, but kept the lights where you see them now. I have to add a few more COB's so I don't have to have the lights so high. Covering an 8x8 right now with 740 watts drawn. They are getting flipped within...

I believe that they are still Bright Light LED.. But selling the Spectrum King as their "brand" of grow light. As far as the Cree endorsement goes.. I'm just guessing on this one, but I can't imagine Cree backing a product/company making false claims about their product. Doesn't make any sense...

I actually did a flower run like that. Initially it was purely supposed to be a veg light but I decided what the hell and flowered under it as well. I have12 CXA3070. 6 are 3k and 6 are 5k. Driven at 1.4a in a staggered alternating pattern. I noticed there was much better trichomes and girth...

No offense, but this thread has gone from talking about commercial lamps not being cost-effective, to making heat sinks out of aluminum foil and steel wool. Holy Fucking Shit.