Don't have any plans, but I built one for the same purpose, would be glad to
help with any measurements or angles or info you might need.

you can see it here

http://home.fuse.net/ace883/

"Norm Courage" wrote in message
.rogers.com...

I'm planning to build a lighthouse to cover my 45 gallon biofilter, has
anyone ever come across the plans to build one.?
--
The Courages