I buy uncooked shrimp in the shell. I peel the shell off and soak the shrimp in a cup of my tank water for about 15 minutes. I cut it up into 1/4 inch cubes and freeze it in a tupperware bowl. When it's time to feed, I break off one of the cubes and hold it in the tank water. The clowns "love" to come up and eat little bits from my hand. When it is thawed out I put it just above the "mouth" on the disk of the Anemone and move my fingers around in the tenticles a few seconds. The Anemone will close up on it and eat. Works every single time for me.
125 Gal-35 Gal Wet/Dry-Tetra-Tec PF500 HOB
(3) AuquaClear 301 Powerheads-600 GPH
Automatic Tempature Controller
5-6 Inch Sand Bed-200+ lbs of LR