sun corals dont need to be shaded the light doesnt affect them at all in any shape or form, Make sure it gets good flow though, Somewhere someone let out the rumor that they dont like flow because they live in caves and under over hanging ledges. How long have you had that goni for? its looking alright. bioypsis (sp)> i believe Lettuce nuti's eat the stuff. I'm gonna be posting some pics of my 10 gallon in a bit under the heading "Scottyj'S 10 Gallon" you should check them out. I would have posted them already but im trying to work out the pics as there are a lot of very bright spots in the pictures.