1. Unzip the package. 2. Attach a suction cup to the Waste-Away Gel. 3. Stick the gel in the tank, filter box, or sump. 4. Replace the gel when it changes color, indicating that it has been depleted.

DrTim’s Aquatics Reef Safe Waste-Away Time Release Gel – Natural Fish Tank & Aquarium Leave-in Waste Management Solution for Dissolving Cleaning Organic Sludge – Treats 10 gal