So how many pepermints should I get? I don't want to overcrowd my tank. I have a 75 gal tank with about 10 small fish (1 blue tang, 2 clowns, 1 yellow tank, 1 blennie, 3 cromis, 2 angels) I also just added some starfish and I have 2 shrimp (1 cleaner 1 fire). I know some have told me this is too...