Review on Penn Plax PBV14N Feeding Blocks by Dana Rodriguez

Putting this in my 58 gallon tank for my assortment of fish to eat while I'm gone for 5 days. I used two different types of feeders to see which is better. I used the one I used previously and had no problems with it; but that was the first time I used it. This one was still intact when I got back, the other one was gone. I decided not to feed them until that one was gone so I sat and watched the fish nibble on it and they ignored it for two days. It dissolved and gave the water a bubbly appearance. I continue to use the Tetra Feeder.