Hello, I'm planning to buy a pack of Rod's Food, which just comes as a big frozen flat. My question is, how do I feed just a bit of it to my tank? I know you can break of chunks here and there, but it seems like the pieces will still be too big, and when it gets to the middle of the pack, it gets pretty thick. I only have 3 fish and a handful of corals, so I really don't need too much each feeding. Any tips or suggestions you have would be great! Thanks!