Oh yes they are.
I have had two, well one might not have been LOW light, it was 27w over 2.5 gallon, but the other is 9w over 3 gallons.
Here is a pic of the 2nd one.
I don't have pics of the first one here at work, I can post later tonight.
Now this tank was put together for my daughters class and so it has not stayed as nice as it would with CONSTANT care, there is some algae on the anubias and it would take a little work, but it is still up and looks pretty sweet just a little dirty and wild now. I don't have pics of it now.