Woohoo, my new Pro-Grow 250W LED arrived today! Won't have the opportunity to put it to the test for at least a couple weeks, but I did turn it on and test it out. Here are some of my observations:
My first observation was that the casing was a little scuffed and scratched up. Nothing major, but it was either handled roughly during manufacturing and packaging, or it was remanufactured/previously owned. Makes me wonder if that's why they sell some of their units on eBay? I took pics of all the wear that I could find and I'm going to email Hydroponics Hut shortly with the pics so they're aware the light was already scuffed up when I received it. It's not bad enough that I would even consider sending it back, but I don't want them blaming me later and not refunding the full amount if I return it.
I turned on the light, and noted that the power supply fans are moderately loud, probably in the range of 50-60db but that's just a guess. It's not super bad but it's quite noticeable within 20 feet. They should document the db on the product page since it's a factor, just like fan manufacturers and resellers document their db.
As far as the LEDs themselves, there are 35 1W blue LEDs for Veg (they look more like white to the human eye once they're warmed up), and there are 84 3W red LEDs for Flower. There's are two green push buttons on the underside of the light, one for each bank of LEDs, so each bank can run separately or combined. Now here's the curious thing... I tested the light with my Kill-o-Watt meter, and it draws exactly 35W while in Veg mode, which sounds right I guess since it has 35 1W LEDs. However in flower mode it only draws 120W, running 84 supposedly 3W LEDs. With both modes running concurrently it only draws 150W total, which is a little less than the combined wattage of the separate modes (also interesting).
Correct me if I'm wrong but shouldn't it be drawing around 250W just for the flower mode alone if the 84 red LEDs are 3W, and another 35W if Veg mode is on, for a total of around 285 watts? That doesn't jive with it being a 250W light, nor does the fact that it only draws 150 watts when both LED banks are running regardless of the wattage of the LEDs. I fail to understand where the 250W number comes from. If there are any LED experts out there (I know there are at least a few on this board) please chime in and enlighten me. I'm also going to inquire to Hydroponics Hut so I can understand how a 250W light can produce 250W if it only consumes 150W.
When I had the light turned on I took the opportunity to measure the heat generated from it. 1" in front of the LEDs it raised the temperature from about 81 degrees to 96 degrees, and about 6" from the LED it raised it from about 81 to about 86 degrees. Since the light is supposed to be around 6-10" from the plants I believe, you can expect it will raise the temps about 4 to 5 degrees at the top surface of the plants. Now in an enclosed environment like a tent, if there aren't any fans it's going to raise the overall ambient temperature in addition to the focused heat directly in front of the LEDs, but I don't think it will be very much. Aspyre said it raised his ambient temps by about 3 degrees I think. This means that if your ambient room temps are at or under 75-80 degrees a person should be able to get by without any additional cooling, although circulation is always desirable of course.
That's about it. Obviously if this thing does what it claims and it only draws 150W max with both modes running, it's a huge energy savings over CFL and a gigantic savings over HPS/MH. Aspyre is already testing his and I'll start testing mine in a couple weeks. If it doesn't come at least close to the manufacturer's claims it's going back within 90 days, but I obviously hope it does everything it's supposed to.