One panel is more than enough per shelf. Came fast, they are easy to install and work really great. Used it for a dark shelf above a terrarium.
The dimmer/timer settings work great and easy to set up. Not only is the brightness adjustment very accommodating for a living room space it is helping my little succulents and cactus thrive.
Quality is bad. It defeats the purpose of not having to worry about control when i'm away.
The stand and fan like phalanges is what makes this thing cool, no complicated setup, nifty built in timer. Individual lights that you can bend and move around to suit your plants needs.
The timer works well and is perfect for my small table of cactuses. Highly recommend this light for seedling support in preparation for gardening.
This is my second order of these grow lights that burnt out after 8 months of use. I have to have my plant within 6 or so to even feel as if they are actually recieving and actual light. Any small growth still faces the nearest window.
This is less than ideal or even acceptable. What a waste of plastic and resources. Better to just put the money towards a real grow light. I believe that it is more like an over priced lamp.