I use Ocean Nutrition and usually purchase in LFS or on Amazon. Some supermarkets sell it as well.
@redfishbluefish where do you buy your nori?
I was originally buying from my local Asian
market, but they weren't the best and eventually closed. I then discovered H-Mart, an Asian
market that I love. I think they might be a chain, so check them out. Their Nori choices are unbelievable....an entire isle on both sides. I actually tried kelp (big package), because it looked interesting.....don't bother, the fish don't touch it.
Anyway, I buy packages with the most (at the right thickness) that have maybe 30-40 sheets. What you want is plain nori without any added salt or spices. Don't worry about it being roasted.....all nori is "roasted" to dry it out.
My other tip is look closely at the nori itself. I don't like the real thin stuff....it disintegrates into little bits before the fish can eat it.
I thought I was going to be able to take a picture and show the differences in light passing through.....but that didn't work. The purple nori feels like tissue paper while the brown stuff has more of a thin cardboard feel. You want the cardboard. You should also be able to tell in the overall thickness of the packages with the number count of sheets. Packages are only a couple bucks, so buy a couple different ones to give your fish variety. I keep one small sandwich baggie in the fish room while the rest is kept in the freezer.
If you're interested,
HERE's how I cut the nori for storage and feeding.
