6000K 1000W Double Ended Metal Halide Grow Light Bulb,High PAR Enhanced Blue and Violet Spectrum for Horticulture Hydroponic and Indoor Plants, Grow Bulb,CCT 6000K,95,000 Lumens,HID Lamp

I have no idea where people come up with the numbers for the CMH lamps, but my plants can tell me. Along the bottom portion of all my plants have turned yellow and leaves are falling off due to lack of light from this weak 315w CMH lamp. I switched from 400w MH to 315w CMH after 1 week finding that my branches have stretched so tall they have ruined the plants. The stems and branches have also gotten smaller and weaker as they have stretched so long. Using this CMH lamp made the plants act as if they were in shade and needed to stretch up to the light. If you do not want to ruin your plants then do not switch from MH to CMH lamps. CMH lamps do not come close to the efficiency of image lamps. The stems and branches of my plants have stretched four or five times greater a distance between internodal spacing just in one week's time of using 315w CMH lamp with a Growers Choice 315w CMH ballast. I am extremely disappointed what this CMH lamp has done to my plants, and would not recommend anyone switch from MH to CMH lamps. I have achieved much closer internodal spacing with MH lamps and even CFLs then this 315w CMH lamp! I have removed the CMH lamp permanently and I'm sticking with MH lamps for closer internodal spacing, thicker stronger branches, thicker darker leaves, and healthier plant all around.

came in one piece and works as expected . being a delicate item you worry, but mine got here and is doing its job. just use normal precautions when you install it. (screw it in) best not to let your hands touch it ,oil can cause hot spots on the bulb and cause the bulb to possibly fail (possibly ill say again) just good practice with these type of bulbs. its only happened to me once and it was not this product ,just a high pressure light i was installing along time ago.i started wearing gloves and have never had it happen agin

The Protopia Metal Halide bulb was a trial to see how well it works compared to a few I have used in the past. I was looking for a 600 watt MH bulb with a concentration for vegetative growth. I have to admit, for the price, the performance was not too bad. I will purchase this one again.

Definitely wanted to believe in this product ,but it definitely sucks that I have ordered this item twice already and had yet to work in me. Second time was worst than the first, second time being the oil already looks used and handle felt so loose I was scared to use.Definitely invest in something that’s not gonna fail mid growUpdate: taking about 2 weeks for refund. Seek elsewhere for bulb

Runs hot. Super bright white. No good in small spaces, as it needs to be hung alot farther away from canopy to not cause damage. Good for supplemental UV blast late in flower. HORIZONTAL USE ONLY so says a hidden flap on the inside of the box.Will burn you if you spend time under this light. Long sleeves and uv shades REQUIRED. Felt sunburnt after 10 minutes.

Worked great for right around 12 days then blew out. No oils on the glass,never touched the bulb bare handed,didnt get wet etc.Havent attempted to talk w customer service because it could have just been a defective unit but I'll just go back to hortilux and call it a day. Great price and if you get one that lasts its a great deal but mine worked out to about 1$/day till end of bulb life. No thanks.

Second time buying this bulb in half a year. Mind you I bought this one because I thought the first blew this wasn't the case. I simply had to wait an hour before turning back on. The first one blew last night. I only just opened this one today didn't work and immediately upon opening you notice what ever this marking is on the damage bulb inside. Tried contacting regarding the first one was told to contact Amazon. I need a replacement for two bulbs now. Not buying a third.

Very well made product we'll buy again