Cool broMost I've gotten was just over 1.50 gpw with a 600 but I don't do hydro or the numbers heath does but with Pro mix and vert setup you will very well break 1 gpw with an HPS I add CO2 I may just get 2 gpw or close to you just stack them and train them right so it fills the space you waste all that good light with reflectors you get much more grow space for a light vertically hung.
I don't care if I convert anyone yall are the ones trying to convert people HPS is tried and true and well known for breaking 1gpw but you don't get more from an LED as I have yet to see over 1 gpw. So please show me something over 1 gpw with your LED's or just go back to being butt hurt about your unwise purchase.
Ya, I am getting them tested still...operative word is getting. I have done my end...other party needs to do theirs now.
Once you get things ironed out I might build a cob based light just for my situation. I want to surround each tree with a minimum of 600 watts. I want to hit them from 4 sides. I'd love to have 3 of those cobs you are working with in a vertical column. 2 might do it just need to see the footprint really.
Looks nice what kind of cobs are those? That would be awesome. I have used both hps and a clw ss400. Of course the hps produced more bud the quality goes to the led hands down. I also use a 10k finishing bulb. The taste is just better under led. I think the radiant heat from the hid affects them in a negative way.How about 4 of these hanging vertical around a tree. That would be 800w. Maybe I will test vertical next?
How is the efficiency of these vs the crees gg is using? I like the looks of that light and think it would do exactly what I'm looking for. Id rather have the bottom warm white be moved up to be warm white cool white warm white neutral white
Yes. I had a rather long conversation with the owner about him using flat plate instead of finned heat sinks. But look at his web site. the coverage area is pretty small for his lights.
I tried to get pricing on Lighting Science Groups lights, they referred me to two "local" distributors and 1000bulbs. None of the distributors carry the lights. WTF??? I emailed LSG telling them they should consider me a wholesaler because I would have bought 4 dozen MORE lights than their current distributors. The main factor holding LEDs back is their high costs. Those COBs aren't very efficient. A one watt diode puts out more than twice the light per watt as any COB. 1W diode=236 lumen/watt.......50W Cree COB=86lumen/watt They're just a lot easier for a do-it-yourselfer to build. The LED will grow enough to pay for itself in one grow, true, but that assumes no costs for anything else, like dirt,equipment and nutes. The HPS will make a hefty profit. A "good" LED to cover 4x4 will set you back well over $1000
Hydro Grow makes a 5 sided "vertical" for about $2750. I think Hydro Grow is made in China. Its not very long. You would need two. That over $5000 for a China made light
You're not getting it. I'm not talking about commercial panels. All commercial panels fall short in one area or an other. But DIY will conform to anything.
Not sure where your getting your numbers from, my Cree CXA COB's are running at 52 watts with 128lm/w at 39.3% efficient.
I'm looking to cover each tree with 4 lights. I'm thinking either a51 r/w or onyx bloom. The onyx will probably be a little cheaper but the a51 might be more efficient. The onyx would run 1000 watts per but would definitely light them up. The spectrum looks nice on those leds. A51 told me he will have the spectrum charts on his new website in a week or so.
Being flat out honest, not good at all, 15%-20% if it is lucky versus GGs 47-49% design. The efficiency of generic COBs doesnt even approach the lowest bins of the Cree. GG is using the top bin and then one more bin up from that. Also be wary, those "200W" lamps are passive cooled. If you are going to use passive cooling on a low efficiency LED running hot, you may need 150cm²/W or more to achieve a reasonable Tj. That would be ridiculous the heatsink would weigh a ton. Without a fan, it is an engineering failure and may even even burn out the COBs.
I got my numbers from DigiKey, supposedly sourced from Cree itself. These were for 2700K warm white CXA2050 (I think, feel free to correct me). The higher K numbers (5000K, 6500K,etc) were better, but I think 2700K is a better spectrum.
I give you credit to have the nads to come on here and talk smack. Both GG and I have been brutally honest about our HPS and LED yield numbers. If you want good honest data you have come to the right place. Where I come from >1gr/W is like bigfoot. Everyone has heard about it but no one has any proof. Here is a pic of .5 gr/W under a pair of 600 HPS, my best ever with HPS. How can I fit 4X more buds in there with the same canopy size?I don't care if I convert anyone yall are the ones trying to convert people HPS is tried and true and well known for breaking 1gpw but you don't get more from an LED as I have yet to see over 1 gpw. So please show me something over 1 gpw with your LED's or just go back to being butt hurt about your unwise purchase.
That's what I thought. I would love to make my own with those cree that gg is using. Three of those in a fixture that's around 3-4 feet tall. If you could switch each one on and off individual would be awesome. Turn them on as the plant reaches the next one.