Penn Plax Pro-Balance 14 Day Time Release Feeder Blocks Qty 2 Part # PBV14N
 
Pro-balance dissolving fish shaped fish food
Contains tubifex, bloodworms, vitamins & minerals
Releases nutritious freeze-dried foods, while neutralizing your aquarium water
One block feeds up to 14 days for 10 to 15 Gallon Aquarium based on pH & Temp