Frozen Fish Food Dispenser (For Salt and Freshwater)

I made this for my reef tank and designed it so that I could hang this on the side of the tank and pop in frozen fish food cubes. Since they float, the fish can't get to it until it starts to dissolve and slowly feeds the tank over the course of 15-20 minutes. I also put spirulina, flake and even pellet food in it. I would recommend using PETG since that is fish and food safe.