Rethinking how I feed nori ..

[Delphinus]

So I feed nori to my fish by wrapping a piece around a piece of PVC hung in the tank by fishing line and then using an elastic to hold the nori on. Pretty standard fare, I think most people do it this way or a variant thereof.

What's never sat well with me is how often I have to replace elastics - at least once per week. Sometimes I find them, most times I don't. Most of the times they'd find their way into the Seio in the back (why always the Seio and never one of the others, I don't know, more suction maybe??), or one of the urchins would find them and decorate themselves with them (and then I could pick them off the urchin).

Today I see my sailfin tang has a little something hanging out his poop shoot - yep, a totally formed elastic. He's tame enough that he let me get my hand up to him and pull it out (ewww, never speak of this again) but now I'm a little nervous ... I've had him for 9 years, I can't imagine how I'd be if I lost him and to something like he was bunged up with elastics ...

Any thoughts on how else to hold the nori down? I know some people use gutter guard but aren't you faced with the same problem, how do you keep it down on the feeding tube? Wonder if I could make something using nylon screws as hooks or something..