AC InfinityIONBOARD S22, LED Grow Light Board with Samsung LM301H Diodes, Deeper Penetration Full Spectrum Lighting, for Veg Bloom Indoor Plants in Grow Tents Greenhouses (2x2)

These 4x4 lights are very warm. Which raised the temperature in my tent by 10 degrees. However, I guess I dont have to buy a tent heater since its at 76 degrees now, instead of 66 like it was..... Awesome!They are very bright, very very bright (running on 80 percent).So bright, my plants are mad now because they were used to less bright lights. So, I'm hoping they perk back up asap. Hopefully these lights last a long, long time for the price, but im nervous since many of the reviews claim a 9-12 month life span before failure due to overheating.. If this is the case, hopefully AC Infinity don't mind giving me new lights every 9 months for the rest of my life. Could present a problem though, since I dont really have any backup lights laying around..... Fingers crossed.As long as they last at least 20 years, I would say they are great. 😆

I'm impressed with the quality of the light board and the accompanying manuals and accessories. The light output is excellent and easily controlled with the adjustment knob.

My six year old "purple" light finally died on me about 8 weeks into the veg stage, so I decided go with something more modern and efficient.One note - there is an error under the "specs" on the amazon product page at the time of writing this. The 4x4 model draws 400 watts, not 100.This thing is a beautiful, heavy duty design.Everything was packed very well, the included documentation easy to follow, and their beautifully illustrated grow guide is a nice addition for relative newbies. It is packed with all sorts of info you need for a successful grow.The light output and spread / coverage is excellent in my 4' x 4' x 80" tent, and the included hardware makes for an easy setup and height adjustment.It does put out a fair amount of heat, but the AC Infinity exhaust fan (not pictured) takes care of the heat just fine.I'm excited to get so much more light output with a much more efficient instrument like this, and I can't wait to see how my next grows go from start-to-finish with all the new AC Infinity gear.I liked this light so much I immediately ordered their exhaust fan / filter combo, a clip fan, and the 69 pro controller. Can't wait to get everything set up and automated today. Wish I'd just gone for the all-in-one tent kit from the beginning! The energy savings alone from the more efficient LEDs, and being able to schedule everything more specifically, should pay off in no time.Will definitely be adding their humidifier and heat mat for the next cycle. Highly recommend!

Love everything about ac affinity really good product. I have bought a lot of stuff from them but my light went out and did not know still had warranty until after the warranty so I lost all my grow because had no light. I only got half the hours out of it. It would of been nice to get a replacement out of it since only got half the life out of it. I have bought 3 lights and tons of other stuff from them.But I still love there products!

Perfect for small tents! Works amazing!

it's my first grow light. I used it to start seeds to be transplanted to patio pots because of short growing season. great quality, i hope to get some additional use in our off growing season. I'd buy again or consider a larger version.

Update 5/23: After about 22 days of waiting, AC Infinity came through with a new light for me. I hope this one lasts longer than 11 months like the first one. Just glad to finally have some decent light again for my plants.Update: My light died in less than a year after use. It's my only grow light and I took great care of it. I never dropped it, never bumped it, never damaged it at all. It just died. The light didn't even last 3 grows. So I contacted AC Infinity for a replacement because it falls under the 2 year warranty. They seemed very helpful, they said they shipped out a replacement for me, I even sent my old one back immediately.It's now been two weeks since I contacted them and the tracking number for my new light has still not been updated. They keep giving me the run around and say my new light has been shipped, but today I called UPS and they say they don't have the package in their possession. Now I don't even know what is going on. AC Infinity took my old light and have not shipped out my replacement, but at the same time they are claiming they have. I'm starting to feel like I got ripped off big time.-------------------------------------------------------------------------------------------------------------------------So I've been using two older box-style LED grow lights in my tent for the past couple years. You know the ones with the fans built in? In the summer time, even with proper ventilation, my tent was regularly over 100 degrees with both lights running. I've only had the AC Infinity Ionboard for a few days now and I can tell we're going to be good friends. The temp in my tent with the Ionboard running at full blast is 82 degrees. That's not to say the driver doesn't get hot, but the overall tent temperature is perfect.The S33 model is stellar for my 3x3. I used to have to pull about 700w from the wall of LED lights to cover the entire tent area, now I'm only using 240w. The light dispersion the Ionboard is incredible. Almost every leaf is covered. I know I've only had this light for a few days, so it's more of a first impression review, but I just felt people should know how well the Ionboard keeps my tent cool. The AC Infinity build quality is impressive at this price point, very happy with my purchase.

AC infinity doesn't publish these numbers so i calculated them myself. Hopefully this saves someone else time.There are 1,020 total diodes on the ionboard S44 board.64 of those are red (730nm & 660nm)512 diodes are 3,000K448 diodes are 6,500kSetting aside the red, this averages 4,652k per diode. So if you are using an app like PPFD meter app to calculate DLI and you are using the ionboard S44 then the correct light setting is either 4,000K + 10% **or** 5,000K + 10%. Unfortunately there is no option for 4,500K + 10%. This should get you roughly right.