I wasn't sure if a "Yes" response meant that I concur with your observation that most do not have canopies or that I do have canopies on my tanks. Regardless, I have canopies on 2 of my 6 tanks.
I am implying that in freshwater not many have canopies on their tanks Nad if you look in the photo lounge there aren't many pics of tanks with canopies LOL
I only have 1 cause it came with the 125 setup I bought from someone. Makes me want to get one for my 150 though but then it would be WAY to tall for me lol...