Whatever you decide let me know. I got heximita as well, I unpack it and pour it into a cup, and then add water, and then dump it in the aquarium
Never tried soacking food. Might wanna try soacking the contents of a capsule in 1/2 tsp water etc. and see how much food you need. I'd use something dry like flake or pellets.
let me know it sounds like I am doing the exact same thing as you in my tanks.