I put my frozen cubes into a ketchup type squeeze bottle with a pointy tip that I got at bed bath and beyond. After I put the cubes in, I suck in about 1/4 of the bottle with tank water. After it thaws in a minute or so, and I swirl it around so it's not in a cubed clump, I unscrew the top of the bottle. Then I place a brine shrip net over the top opening of the bottle and drain the water off through the net that is pulled down tightly around the bottle opening. When the water is drained out, I put the top back on, suck more fresh tank water into it, and then start squeezing little by little of the food into the tank as the fish eat it up.