To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
They arrived undamaged and working, which has been a problem for others. Nice spectrum. They seem to be as bright as previous bulbs I've purchased, and were very cost effective. Hopefully they have some longevity. I'll update if there are any short term issues.
After the original bulb in my Jumpstart 4ft system, I wanted to get some extras - it stinks when you have seeds germinating and the light goes out... These bulbs fit perfectly and the 6500k is the same intensity as the one you get in your JS system.
I'm always looking for quality, cost, shipping and packaging. Everything about this transaction was perfect. Great bulbs, well packed and fast shipping. I even like the shipping container. Thanks a heap!!! Happy Growing!