Petco bookshelf tank smell bad!

[Rich Guano]

I've been running this tank for over 15 months. Recently the light fixture has begun to let off a musty smell. At first I thought maybe mold or dead snail behind tank, but no. This smell is surely coming from the light fixture. The white plastic reflector is warping, and the smell is strongest when the light is warm.

I plan on drilling holes the help vent the hood of heat.

Now I am wondering if anybody else has noticed this, and should something be said to Petco about the product.