I've been following a lot of the discussions on food and I'm ready to try NLS exclusively for a time. Right now, my fish have mostly been eating Omega One shrimp pellets and Krill, as it is larger - everything else is just small treats. They used to eat NLS heavily, but have moved away as it seems too small to bother. Mostly the catfish, HRP and clown loaches clean it up. I can only find in 1MM and 3MM. I also don't feed it in my gravel tanks as it is too small and gets in the gravel - have only been using in my sand tanks. What size do you all recommend as fish get into that 10-12"+ range, and if I wanted to buy a larger size in bulk - what is the best place to find it online? Appreciate the help.