my yellow tang is eating with my clowns

[jess128]

I knew the nori should be tied down, just wasn't sure how to do it. The plan was to buy one of those suction cups with a clip on the other end but I never got around to it. I just found it strange that the tang would come to the surface for clownfish food but not the nori. Anyway, I dug up an elastic band and anchored the nori to a rock with that. Thanks for your help.