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sounds like a crazy storm littlejacob, glad you are ok and hope it didn't stress your drivers! I'm still running with the idea of using these and found more on ebay - searching "300mm heatsink". Any guess on if they could handle two COB's each? 1050mA, either Vero 18 (6 total) or 29 (4 plus...

Has this been verified with a spectrometer? When you state "The more even the spectral output", is the spectral output in the range of what benefits photosynthesis more than visual appeal? These lights are designed for producing "good looking" light, not for the spectrum the plants may need...

I'm a little confused about the desire of some to build lamps with a high Color Rendering Index. Isn't CRI simply a comparison to how "normal" colors appear under it? Plants don't use the same spectrum as the human eye to grow, so just because the light may not render colors in a way that is...

Mostly veg but would like ability to flower even if it means a couple of strings of red... or strings of blue to for better veg. cabinet is 2'x3', if i remember right, 45" between top of growing media and mounting rail for light. Are picomolex the common way to go? searching for part numbers...

I'm trying to hunt for good bin cree cob's. Can't afford anything like the 35XX, limited to range of 3070 variations. Any tips other than copy and paste from data sheets to electronics parts finders? For my purposes, 4,000K followed by 3,500K as far as color. I do not understand the 2, 3, and 5...

The alpine were $7.50 when 4 or more were purchased from newegg a month ago but that has changed. How many home PC builders were really buying 4 or more? It was the only one I found that day with discounts for multiple purchases :) I think they know their market. As far as the heatsinks I...

Could someone repost the link to the spreadsheet which shows examples of driver compatibility with common COB's - the ones Supra did which explained why x.1 COB's per driver? I printed it out in the middle of the week, lost it and spent a few hours online looking for it today. Maybe I'm too...

I don't have real spec's on this heatsink but ran across a pair at a garage sale. Wish I knew what it was for, if the mounting slots built into the design could be used in some way. It is 300mm long (12 inches). The thickness of the heaviest part of the heatsink is about 3.5mm (0.15 inch)...

Until I can afford a second pair of Vero 29's, can I get by with 2 x Vero 29's BXRC-35E10-L-23 (3500K - 80 CRI) on a HLG-120H-C1050? How close to ideal is 4x Vero 29's at 1050mA for a 6 square foot (2x3) cabinet with a little supplemental blue and red LED? Will be using 2 x "30w" epileds full...

I don't think they are good for electrical fires but the extinguishers which use foam are probably easier to clean up than dry chemical. Not that I've tried cleaning up foam, but the dry powder gets everywhere. The pure CO2 ones should make no mess but I don't see them for sale in stores. May...

Maybe I'm making the mistake of associating the lighting color (3K, 4K, 5K, etc) with old fluorescent T12's from the last century but what people chose back then was colors closer to 6K for cuttings and I assumed the 3K range would have been for those that had to flower under them. Are CXA3070's...

Just a note which may or many not pertain to the osram screw in fixture: Yesterday I removed the lens from one of those $3 (ok, can't remember, but I got what I paid for) screw in socket Chinese blurple's which have about 5 LED's, probably 3 or 4 red and 1 or two blue. My experience with this...

how close are you getting to the plants with the Osram listed above? I ask because I had something similar looking from China which seems to have some magical property of killing plants even at one meter. I had thought of trying some diffuser lens but at some point should just call it a loss...

Those sound pretty sweet, how is the odor and phenotype for space requirments? From what I've read most of those are sativa? It sounds like you have tried the CBD crew strains - and say "most" are good. Any to avoid because they either have either funky phenotypes with ugly lanky tall plants...

Which holders and lenses... or dependent on space to be lit up? I can drill and tap #4

Recently found something to be completely contradictory to my beliefs. I lost my taste for THC about 15 years ago. The entire, uh "what was i talking about" and loosing my train of thought, feeling lost, over introspection - it just wasn't enjoyable and sometimes scary. Back in those days the...

Thanks BYC... trying to give you a thumbs up for the reply but can't see how it is done (the thumbs up). Are 4 COB's really needed in for that small of a cabinet? I've read a little on how bright they are at x%. The footprint would be from 3.1 square feet if I conservatively measured the inside...

I'll rephrase the post from yesterday. I'm impressed by the white COB's, but am concerned about how close they could be used in a small cabinet - say 4' high, 18" x 32" footprint, with NFT or ebb / flow taking ups some space at the bottom leaving little vertical space. I also like the idea of...

Chronic muscle spasms, and real, genuine nerve pain. I spend a few thousand of my own personal $ a year for unconventional treatment in addition to tens of thousands the insurance company drops. I do not want corticosteroids but allow them on occasion when it's been a couple of weeks without...

I'm new here and just reading random posts but this one caught my eye because I have a strong opinion on the subject. Yes, I'm aware this is indoors Just one more opinion thrown in - at the equivalent of "sunrise". The stomata are closed in the dark and just beginning to open. Probably continue...