Feeding Question

I have a 29G with 1 Strawberry Dottyback, 2 clown fish, a pumping Zenia, sun
polyp and 2 feather dusters. My clownfish won't eat flake food, marine one
pellets, frozen marine one, mysis shrimp or brine shrimp. I almost gave up
until I shared my talapia dinner with them and they went crazy for it. Of
course the dottyback will only eat everything the clowns won't. I've put
talapia, mysis shrimp, regular shrimp and frozen formula one in a blender,
mushed it up, froze it in a block and now grate some off and feed it. All
three fish are now eating well and I also feed it to my sun polyps. Do I
need to add anything else to the mix or is this a healthy enough blend?
--
Ann R