Here is the refugium. Not pretty. I need to get some PCs for it since I switched lighting on the frag, I can have the old light strips on there because it would block the light from the MH for the frag tank. I have some caluerpa in there scattered in the LR rubble. The pipe is from the overflow of the display tank. THe prefilter box sends it to the sump. Yup, it needs more plant life, bob.