the cap is a purple rimmed green cap I got from Travis on reef central. the purple rim just hasnt taken off too well though. I plan on moving it because it is starting to be shadowed by the idaho grape. Any suggestions on placement of it? right now I have it mid way down under my 250 watt halides. thanks for all the compliments, It's diffenently a labor of love (and money) to keep a healthy tank.
jeff