The clamps that it comes with to attach to the aquarium rim won’t fit if you have a glass lid. I just rest it on top, and it’s not as bright as I’d like but it work well enough and can grow plants pretty well.
Gets the job done but isn’t too bright where it’s obnoxious (which is why I replaced the last one)
I had bought two of these clip-on lights to put on my 5g bowfront tanks. They are bright enough for me to now have some ludwigia and anubias to grow, compared to the light that was built into the default lid. However one of the lights had a flickering issue which was promptly resolved by Candi when I sent an email detailing the issue. I was shipped a new light as replacement and it arrived in about 2 days. Thank you again for the great experience, I will definitely be ordering more from the Co-Op in days to come!