Search results for query: *

Give it a shot, I think you would be amazed. 3W of LED is plenty for a cloning box.

@Lenny Gray It is really a matter of opinion. The manufacturer suggests "nominal" current which is about 75% power. I would consider that running hard because at 75% there is significant current droop in a Cree CX series. I run mine at 15-25% and consider that soft which allows Cree COBs to...

Another data point, Luxeon run at Tj 74C, 1% depreciation after 1 year of 12/12. Estimated 5% depreciation after 10 years of 12/12 Cree Xlamp, Tj 65C, 10 years of 12/12, 3% depreciation

From the LM80 data seaslug posted, the CXA3590 run hard and hot loses 20% of its output after about 9 years of 12/12. But the primary reason for running soft is to increase efficiency by reducing current droop. The main advantage to higher efficiency is to reduce waste heat in the grow space...

Just grabbed a pack of those. Did you pop them yet?

For a few more bucks, apparently this thing improves on the 1000 HPS and has a 95% efficient ballast. I wish I had tried these instead of my generic 600W HPS setups. But I have switched to COBs leds and sold the 600s. http://growershouse.com/gavita-pro-1000-de-complete-fixture

You guys probably know I use DIY only but I stumbled across this lamp on Amazon/ebay and it caught my attention claiming to have Vero COB chips. So I reached out to the company to see if they would send me a lamp to inspect and they did. It has genuine Vero 18 4000K powered by Mean Well...

All that said tho, I did find a burned out driver the other day. It was powering a CXA3070 at 900mA and it just died for no apparent reason. No biggy to swap out and it was the first dead driver out of dozens, but worth mentioning. I am just glad it did not harm the COB when it died. It was this...

At 1W the XPL could reach 180 lumens. That is very bright in a 12"X18" box, the clones stay very happy. Some of my friends use 40W of fluoro over their clone domes, but I believe that they could get the same job done with 1W and put those 40W to work elsewhere. I have analyzed the MKR because...

$9 fasttech dimmable headlamp (100mA-600mA) modified with 4000K XML2 and panasonic lithium 18650 assortment of cheapo AC LED drivers covered in shrink wrap. The slide connectors makes it quick and easy to swap them in any circuit. The very worst perfomer in the bunch is also the most expensive...

Since the XP-L became available, I would recommend that above the XML2 because the XPL is available in top bins with a cooler color temp, perfect for cloning.: http://www.fasttech.com/products/1609/10009336/1826505-cree-xp-l-v5-2a-1186-05lm-5700-6000k-led-emitter

Toaster you are correct it is very significantly underpowered, but there is a nice efficiency bonus in this case unlike the hummer with the yaris engine which would suffer from poor load matching. When it comes to cloning we are not looking for photosynthesis, just trying to keep the plant in...

Awesome lamp MD! it does look familiar haha. Yes my final numbers from my first all-AB bin run turned out 1.39g/W, blew my expectations away. Next batch is coming down now, looks great and finished on time 7.5-8.5 weeks depending on the variety. Running them at about 800mA now and the red/blue...

Wow that is one of a kind! How hot is the metal next to the COBs and what drivers are you using? How much is it drawing from the wall?

THNX DP, the batch turned out MUCH better than estimated, 1.39g/W and a record yield for that space (4'X5' canopy). So 611W of LED far outperformed my 2 X 600W HPS setup, very encouraging. Granted, it took 9 weeks to finish and my HPS results have never been very good relative to the claims of...

There were a lot of new flavors in that batch. The standout was TH Seeds Sage N Sour, amazing smell. Doughy smell with diesel fuel and very strong. The TH Seeds Darkstar continues to impress me and I got some of their Dawgstar fem beans to try out eventually. I got 3 GSC X Chem D babies vegging...

Sorry for lack of updates. First all-led batch came out 1.16g/W which is a huge improvement for me. Second batch turned out 1.17g/W. Third batch still drying but I am expecting 1.1g/W as a minimum. I am not growing big yielders and I don't put much care into canopy management since I run so many...

You could use Cree XML2 U2 4500K for cloning. I use one in my cloning box running at 300mA (1W) and the box is good for up to 20 clones. http://www.fasttech.com/products/1609/10003889/1574600 driver: http://www.fasttech.com/products/1612/10002422/1178000 You can get 5000K 6000K and 7000K in the...

@gilgamesh I use the 10.08"X6" chunk for a pair of COBs but I run them at 700mA (~50W total) and use passive cooling. If you run them at 1.4A you could use the 140mm fan but it doesnt reach all the fins so I think the 5.88" profile is a better bet. For the bucket lid though, the 10.08" would be...

In a nutshell, Cree is the best there is IMO. I am a big fan of the Cree XM-L2 and the Cree CXA3070