I saw that aquarium bulb and was thinking of testing it out.
My shelves are very small and compact, and the layers I have and the positioning of the brackets really isn't ideal. This shelf is the top shelf also which has the smallest space, and the only way I could use a tube is to drill into the ceiling, which apparently may or may not have asbestos so I'm not touching it!
It turns out Sansii do a 10w bulb, I'm not sure if it's still going to be too much for the likes of a Miltonia or anything around the phal mark.
Amazon.co.uk