With the addition of my wrasse, I thaw a chunk of Rod's food in a shot glass, and throughout the day put some on my finger and dip it in the water... I make sure they eat everything (including our shy wrasse), and then do it again. I've been doing this 3 times a day, yesterday was frozen mysis cube, today is Rod's food..
Good stuff so far, and really making sure there is minimal waste generated.