sorry, lol. I though the OP was asking specifically for the CWD, but I remembered incorrectly! I know that YankeeChops has a CWD, so I guess maybe I assumed! That was my mistake.

Sorry about that! However, even with supplementation, you should feed the crickets at least some source of calcium, and anything that should be going into your herp. It's always best to feed crickets whatever you can that is good for your herp so that they will be as nutritious as possible, since they are basically an empty shell. The fish food is good to give them though, and it improves coloration. I'd be careful using it as a staple for your crickets if the brand you buy contains ethoxyquin though... That's bad stuff.