Zoo Med Reptile Basking Spot Lamps 150 Watts (4 Pack)

People write bad reviews after having bad experiences early on in their reptile-keeping with bulbs having a short turn around. This happens to most people, and then after a year or two, they realize they haven't changed a bulb in over 6 months. As you settle down fiddling with the terrarium, as you learn to be extra careful near the light fixtures, as you learn that you do not even try touching or moving or fiddling with the fixture until the bulb has been off for an hour, as the daily routine and temperature fluctuations becomes set in stone your bulbs will last longer.Incandescent bulbs work by pushing too much electricity through too fine a metal wire filament which the metal wire does not like and is thus forced to emit light and heat to keep the energy moving through the circuit, this warms and brightens the enclosure. Most household incandescent bulbs used to be between 10W and 100W; this product is 150W, that's pushing a whole lot more electricity through basically the same filament -- it's an inherently unstable system which is why no one used them for lighting. They are incredibly sensitive to changes in temperature and placement: wiggle it too much and the filament stretches and pulls itself apart, examine the bulb too soon after turning it off and the wire will break off (this happened to me today), accidentally drop a single drop of water onto a lit bulb and it will catastrophically explode (trust me) I do not believe there is any non-anecdotal evidence for one brand's bulbs being more stable or reliable than another's. When you're buying these bulbs you are making a decision based on weighing your faith in a slightly more expensive established brand or a cheap outsider product. ZooMed is reliable in most other products so I trust them with my bulbs.

Came without breaking, works great, would definitely purchase again.

Bulb burned out in less than a week. I've been using these kinds of basking bulbs for years and the quality in general has gone down, but I've never had one last less than a week until now. They also do not heat up properly. I used two of these lights in a 120 gallon enclosure side by side and the basking spot is only reading 91 degrees F with a temp gun.Update: It has been less than a month since i received these bulbs and ALL FOUR have already burned out. One of them completely shattered when I went to replace it. I have never had this happen before. It is not my light fixture because I bought another bulb (same one) at the Petstore to make sure and it is still working and has yet to burn out and is heating the basking spot correctly. I bought these bulbs on Amazon to save money and ended up wasting so much more!

Lights all came working and as expected and are much cheaper than buying from the pet shop, first bulb lasted 2 months and that was with me moving it a lot while I was dialing in the basking spot for my Savannah monitor

These lights are great, one came broken but they sent a replacement.

I don't know what is wrong with this brand but out of 12 bulbs only 3 lasted long. These have died within weeks some days and the last one blew out and exploded soon as I flipped the switch. These are not cheap. After speaking with reptile experts they experienced the same. They are dangerous. Went to a thermal heater instead. And yes I was using a proper fixture.

Arrived on time but light bulbs were shattered.

These bulbs heat up really well and last a long time. They also hold up against the constant splashing from my filters. The 4 pack is way to go, they will last years.