Cascade Canister Filter Pro-Z Filt-A-Pack Zeolite removes ammonia, harmful chemicals, toxins, odors and discolorations. Cascade Canister Filter Pro Z helps maintain a healthy aquarium and keeps the water crystal clear.

• Ready-to-use nylon mesh filter bags filled with Zeolite
• Removes ammonia, toxins, odors and harmful chemicals
• Fits Penn Plax Cascade Canister Filters
• Disposable for no-hassle convenience