  14 Day Feeding Blocks by Penn PlaxOne block contains freeze dried foods and will be sufficient for 10 to 15 gallon tanks and will last 10 to 14 days depending on the pH level and water temperature.
Ingredients: Calcium sulfate, Freeze-dried Tubifex, Freeze-dried Bloodworm, Freeze-dried Daphnia, Shrimp meal, Corn Flour, Vitamin B-1, Vitamin B-2, and Vitamin B-6. 2.82 ounces (80 grams) per package.
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