You say keep lights close to the plants, but I always see lights 2 ft away or better. Why are the lights in the big grows so far from the plants? This is confusing.

@@babiibee8968 Depends on the power of the light and the size of the space. If you ran a 650R at 12" in a 5x5, you'd have a 2000 umol/m2/s hot spot in the center and nothing on the outside edge. For a little light like this, you need it close to hit half-decent PPFD and since it's a small space, it'll still hit decent edge numbers at that distance. Bar-style lights tend to run closer as well compared to board-style.

@@babiibee8968 you are seeing commercial grows using 1000w and equivalent lights. At that power level, lights can be farther away and use that distance to achieve a broader spread

Hey Matt - indeed. You could stretch this to a 3x3 for greens which would be very cost-effective.

Great choice. Have fun

May I plug this into a timer and then the timer to an extension cord that is plugged into the wall. Note: the catalogue I got from the store states "Extensions are not recommended as use may cause damage and break the connector on board." What does that mean exactly? Thank you!

@@mikebenneig653 I have the same question.

Update: light is at very top of tent tied with industrial zip ties. Distance is 10 inches. Light burn? Yes. But it's not terrible. Seems to light green the top leaves in the scrog. Not yellow them. But they are canoeing to varying degrees, and many have slightly burnt tips and serrations. Tho I had a salt buildup as well (coco in fabric pots). So those tips might be explained by that. The important thing though is that the buds are still coming on strong. She seems to really like this light despite the burn.

@@DigitalMadrigal thanks for this.would appreciate any other insight related to height since this last comment

Its the same thing GreenGenes (pacific light concepts) proved the LM301H and LM301B is basically the same thing, one with H is just marketable to Horticulture (hence H). The B is the basic, but the difference he showed on the official samsung website is just that the LM301H has a different reading of light, while H uses lumens or whatnot, which growers use as a measure of plants. Something like that.

Depends on rent size

Interesting setup. They should do alright. A little underpowered perhaps but even coverage since you can move them around.

Well, this board runs at 50C as you saw, and it's fine, so that'd be a safe target. Pull up the data sheet for the diode you'll be using and have a look at the flux vs temp or forward voltage vs temp for some idea of how much heat will affect performance, though it'd be difficult to get a true Ts or Tc measurement like those graphs are likely based on. If you want to use infrared, just slap a strip of black electrical tape on whatever you want to measure and let it get to temperature, then point the thermometer at the tape strip. Bare metal emissivity is no good and can really throw off IR readings (www.flir.ca/discover/rd-science/use-low-cost-materials-to-increase-target-emissivity/). I usually just measure the back of the sink somewhere in the middle with a probe, depending on the layout of the diodes. You might be able to find a Tc measurement point on the surface of the board or strip too, depending on what you're using, and that'd be the ideal place to stick a probe.

@@LEDGardener Thank you so very much !

Haven’t come across one yet but I see a fair number of people use them. Would be great to test one.

I hoped the white text at bottom of screen at 0:12 would address this but I should have taken time to explain in my voice over. HLG sent a pre-production version of board with new diodes but old badging on the board. It has the labels of the HLG100 V2 but is actually an HLG100 Rspec.

@@LEDGardener I understand, that explains it. Thanks

Wow, that's pretty crazy. Their service really is top notch.

@@LEDGardener lol I meant to say power supply Oops!!

I knew what you meant 😎

Mars ts1000 is killer , 150 watts , Spider farmer 100 watts , this one don't know but if it costs more than the Mars , buy the Mars !

@@bruceholinight7978 that's exactly what I decided to do. I'm going to order a 2.3x2.3 complete set and one of the 3 chambered tents to put my ts600 in. I wish I could find the 3 chamber from Mars with everything but I don't see it anywhere. Thanks for the answer, I appreciate it!

@@comfortablynumb9342 Good luck , I'm in Canada so availability is good , all the Mars bar type light's have excellent coverage the fc4800 is awesome in a 4x4 !

Kingbrite or Meijui is the best, for this setup (meanwell and samsung LM301H). I did months of research, believe this... half price of HLG, same parts.

@@dertythegrower There are some cons to this. shipping them from China is not cheap and the support level is not the same.

Where do you see that? My board is stamped as 3000K/5000K. I think you're just seeing the edge of the label where a few other color temperatures are listed.

Yes I see that as well at 0:29. Also the board on this video says at the bottom that they are 301B diodes. Very confusing info

@@SFlaidlaw101 If you pause at 0:12 you'll see I made note that it's a preproduction version and the badges on it are wrong (they also say HLG 100 V2 at the top, while it should say HLG 100 Rspec). HLG sent me this to test before they were in full production. You can also see in this same frame that the 2700K and 4000K boxes are not checked, and it is 3000K and 5000K that is checked. Apologies for confusion.

Nice. What are you running currently?

@@LEDGardener hlg 300 R spec and that light you just showed was the one I thinking of getting for a little boost in my 3x3.. looks perfect

These are made by samsung like the whole thing not just the diodes. They are not the same