I am trying to switch my fishes diet daily because I heard this was good for color enhancement. It is this true? Right now I am feeding them tropical fish flakes, algae wafers, live brine shrimp, and frozen blood worms. One day they get one thing and the next day they get another. I am running low on my fish flakes and I would like to get some more and I was wondering if anyone could tell me a good brand? Also, what is the difference between flakes and pellets? I also planned on buying some seaweed sheets for my ottos. Has anyone ever heard of them eating this?