After the last privately owned fish store went under here no one sells NLS. It's been tough finding anything decent. I read the ingredients. If wheat flour, wheat gluten meal, soybeans or flaked corn are one of the first things mentioned I don't buy it. Don't feed your fish potato chips and twinkies. You can make your own gel food with unflavored gelatin and healthy ingredients there's probably a thread about it on here somewhere. Kinda cool finding out what's beneficial for them. Who knew garlic and chili powder were good for fish?