Do you have a feeder to recommend, as well as an inexpensive source of nori?I just try to keep nori in the tanks 24/7. Get a good nori feeder that makes sure the nori does not get lose in the tank. Some days my 4 tangs plus all the other fish seem to enjoy nori snacks and they will go through 2 sheets in a day in some days and sometimes 2 sheets can last 1.5-2 days. They know how much they need. If you can keep the nori from getting lose then its great to just leave in the tank around the clock for them. After I started to put up nori for the tangs I was surprised how many of the other fish ones that focus more on meat like wrasses will come take bites of nori every now and then. The clowns on occasion the chromis. Most all of my fish like nori.