104
people found this helpful, as of 2023
ranked #250,634 most helpful
out of 571,544,897 reviews
★☆☆☆☆
You are wasting your money on this bulb. It's only full output for 6-12 months.
One of the reasons people get such wide results from this light are that people don't have a light meter to measure the output of these lights. I do. When they are new, they put out a lot of light. Yes, it's red/blue and your eye is weighted toward yellow, so you don't see it, but the plants do. However, after several months I have tested the same lights with the same Digital Light Meter and on about half of them, the output is way, way down. So if you are okay with paying $20 for bulb that only lasts 3-6 months, this is a very good bulb. But if you expect a $20 light to last longer than 6 months, then this is not the light for you. Sometimes you get one that lasts for a long time, but it's rare.
