Here is a TSL2000 a true 300W's of warm grow light, the spectrum can do all sorts of things considering different genetics, this light will grow you some good medicine. In the background are the SP150's, and even though small at a true 130.5 Watts, the light they pack with definitely do the job. You can expect great results with one in a 2 × 2' tent, only I prefer to go to the other route, I bought four and we'll set them up diagonally down the grow closet. The lights do not give off much heat and the drivers are miniscule compared to others but built well, the entire unit is pretty nice. You could probably drop it once or twice and it probably still work. Comparing the light is not a true way to judge between the warm light's of the two lights. Do to differences in cameras it may look "a little off" as shown on my camera, it made the spectrum look a little cooler white then its actual yellowed tented spectrum, much like the SP150, which you can actually see some of that yellow tinting. At the price point for the SP150's are the best light for your buck. You'd want to buy two for maximum coverage, as well as maximum potency in medication. If you can... buy 2, 4, 6 and set your light however you'd them. You'll notice most LED boards come fixed and compacted to one big board, you're not able to spread the light as you would with the SP150's. I debated on whether I should get another TSL2000 and set it side-by-side like the 150's. The the photo, is not how they will remain. They'll actually go down closet 2' × 10'. They'll actually look just like this ( / / / / ), and that will definitely cover the entire closet. If one goes out after a year, I will definitely replace it. This is quality full spectrum light for growing medical grade cannabis at a cheap price. It's definitely been proven over and over again to produce a strains maximum potential. Many people are now substituting the TSW2000 for the large hooded ceramic metal halide. I'm sure many people are considering moving to LEDs, but we all know from the past, the "light bulb" is one of the best ways of growing cannabis due to its wide spectrum uniform, but the technology is catching up making the high cost of light bulbs obsolete. I will definitely do business with Mars again, their customer service was very pleasing, it's become much more of a business with professionals in each area of the business. It looks like Mars will remain a household name in growing medical grade cannabis. Thank y o u ecogrowhawaii.com, Thank y o u MARS!

I've bought other brands of these light strings and loved them, but these are garbage. The bulbs can't even be screwed in without falling apart. I bought two of the 6 string ones. With just the slightest twist strength, the first bulb's end cap twisted right off, which is now stuck in the socket. I opened the second string hoping it was just a one-off defect, 2 more bulbs did the exact same thing. The bulbs are unusable on both sets, and the strings now have broken end caps stuck in the sockets. I've bought 19 or 20 of these similar style grow light strings from different sellers in the past year with little or no issues ("Auraqify" seems to be the best brand/seller.) These are useless, and potentially could be dangerous.