Let me say something… I have never seen… (and I’m talking since 1978 I’ve done this off and on as a hobby)… this kind of development with such thick healthy stalks from my varieties ever or any for that matter which were NOT OUTSIDE. I am beyond happy man… I’m ecstatic! Also, the reduced electric along with knowing the “battle” with heat is over by using your lights is creating a truly pleasurable environment to be in as often as I can be. It’s almost hypnotic hearing the deafening silence within the grow room using your lights after decades of all the noise created by one machine correcting a condition caused by running another machine to correct… and so on… Two simple Hurricane brand figure 8 fans and it is like Jamaica in there!Jeramiah Johnson, One Damn Satisfied Customer

I’ve been following you on forums, YouTube etc and it’s such a shame there are some people throwing hate at you and your company, haters which haven’t even tried the light in the first place, if they tried it they would know it actually works 100% .. i guess they are just not serious enough about growing keep up the good work!Nick O, Italy

My friend owns your 400, he is the one who lent me it to do a side by side honest test…i for sure am going to sell all my ballast and other gear to try to scrape up the money for your 400, i loved it….. those other idiots on youtube don’t know….

I did my own test…. two identical tents and two identical strains…. Tents used were Gorilla Grow Tents GGT 55’s at 5 x 5 x 7′ 11″; Grow Pots were Superoots Air-Pot 7 Gallon Equivalent; HPS light was a 1000 watt badass ballast, with a Hydrofarm 8 inch Raptor Reflector with a Hortilux 1000w Super Enhanced HPS Bulb. LED Light was the Spectrum King LED Series 400 with 90 degree beam angle. The Strain grown was Reserva Privada PURPLE OG #18. Lets make a long story short, my HPS did out grow the 400, but only by a slim margin, HPS was 857 Grams, the 400 came in at 849 Grams….
However the buds from the 400 were, even to my surprise tighter…. Will i ever grow with my HPS again? Absolutely NOT-!!! Why you may ask? Simple, NO NOISE from inline fans, NO HEAT ISSUES, NO BULB replacing… The Pros far out way the Cons… The point is this, will they out perform a 1000 watt HPS, NO, but damn close….. But to grow without all the noise from HPS equipment needed is PRICELESS.Grandaddy P, CO

I’ve been growing for over 30 years and specializing on certain strains for 11 years for medical patients and compassionate care. As many of my clients cannot smoke I’ve been making extracts and tinctures for them. I was accustomed to getting 10-15% max out of my extracts for yields until I tried Spectrum King LED’s. Now it’s just nuts that I’m consistently getting over 22% from them and the quality is off the charts. I’m saving tons on my electric bills and my plants are loving these lights. These things really work and more people need to know about them.Tom, CA

At first I was nervous because my plants reacted a bit differently than I was used to seeing in early flower so I called them up and asked about returning them. They told me that if I still wanted to return them once I finished my cycle I could but just let it finish and that I have a 90 days no bs return policy. Man am I glad that I listened! Love these things now and it would’ve been nuts of me to send them back, they are kickass lights!Buzzy, BC

I am a hobbyist and what I grow I grow for myself, I am very picky on my selection of cuttings and even more picky when it come to the strain and quality of the grow. I have been trying LEDs for the last 5 years and got disappointed every time with the results, now I don’t believe in reds and blues alone any more looking at how my grow is doing. So far I can definitely say I am amazed by the results so much that I ordered two other lights for me and a friend. They run cool (51 deg c @ 25 ambient) and spreads the most even canopy of light I have seen so far in a grow light whether HID or LED, the coverage is amazing. This of course translates in great penetration of the canopy. It feels the light is coming from everywhere, not concentrated on one point and I think it is because of the collimator it has. The buds I have right now are rock hard, hardest I have grown in my grow history although it burnt a little bit as soon as I moved it in, most probably because of the intensity and spectrum change. Inter-nodes are closer than ever and the smell is much more complex than it use to with my previous HPS grows. Guys at Spectrum King are really following up on their lights with their comparative grow on youtube, they are not afraid to show their lights and now I know why. Great job guys! You made my grow easier in many ways

Addendum: I harvested my Pineapple express and got 257g of wet full developed buds rock hard and full of resin - should be around 50g dried. The seed is rated at 15-20g/plant - that’s 150% more. Great lights!!!Homer, BC