VIVOSUN 2-Pack 600 Watt Metal Halide MH Conversion Grow Light Bulb Lamp - Enhanced Blue and Violet Spectrums CCT 4200K, 60,000 Lumens

Bulbs are great only thing is the 400w and 600w look different in pictures the 600w which I got after one in my light kit was old and broken look like the 1000w picture...don’t be fooled by the pics being wrong the bulbs when not damaged work great.

Great product very bright and would recommend and buy again

I've bought several of these they are very bright plants love them but they don't last long the light fades in and out after about couple weeks or so I think the longest one has went before burn out is 2 months if they would run 6 months I'd love them....

Plants seem to like the light , I haven't gotten any complaints yet

Running a bunch of these for about 6 months. All still in good shape.

As far as I can tell, it works...whadda I look like? Chopped liver? Get a life, already...

Great product

awholelotta BANG for your buck with these BULBS!

Both bulbs have worked great so far. Well worth the money.

Pack these with the foam like the HPS instead of cardboard collars. Got about 6 different bulbs this week and please don't use envelopes again to mail them use a cardboard box! I haven't tested all the bulbs but two are working so far, easily understand how they could get damaged though. Couple small bits of glass inside tubes and the tension spreaders aren't all tight so a rattle sound when moving bulb.

These bulbs are great. They have a long life and plenty of lumens. I highly recommend.

Came in good shape, good packaging, and my plants love them

One ball broke completely only after a few weeks of use