After all the advice on here, I ordered NLS for my fish. They seem to really like it but.....it sinks so fast and I think it confuses them. I got the NLS cichlid formula 1mm sinking pellets. I notice my tank is getting covered in a brown dust. Is this from uneaten pellets? They are used to floating pellets and flake. I am not over feeding them. I am actually worried that I am underfeeding them. I have seen the two fry (probably not considered fry anymore) actually eat a pellet or two but I still crush a little flake to make sure they get enough. I put a pinch of the NLS on each side of the tank and they go nuts, but it sinks so fast and most of them don't go after it on the bottom. I have never been able to figure out how much I should be feeding my fish. I have 26 mbuna in my tank the biggest being about 3 inches. I know you should feed them only what they can eat in a certain time, but could someone give me a rough idea of an actual amount of the 1mm pellets so I know if I am even close to the right amount? I don't mean an actual count of the pellets, I mean in tsps or such unless you know how many of these pellets each one should eat lol I know this is a real newbie question, but I have never known if I was feeding the right amount.