The lack of light will not hinder the biobugs you're trying to grow. The
lack of light WILL hinder the growth of algae, which is *good*. Not to
worry: most filters are closed units, with no light.

Lee

"claude rogers" wrote in message
...
My barrel filter is filled with buffer pads and is inside a lighthouse to
hide it, my question is does a bilfilter need light to grow beneficial
bacteria, no problems so far just wondering?