I recently re-did my 55 gallon tank and branched out from my typical platy/loaches/danios scheme. I now have 4 indian tiger loaches, 3 angelfish, 2 dwarf gouramis and 6 corycats. I bought some frozen bloodworms due to the higher protein requirements of these fish, they look like a pack of ice cubes. How do I feed the fish these? Do I simply drop a cube into the aquarium? Do I put a cube in a net and run water over it to de-frost it. There are no instructions on the packaging. Thank you.