Feature(s): 3 pieces per pack Durable air stones effectively create water currents and dazzling underwater scenes Increases surface agitation, oxygenates water Helps release carbon dioxide build-up Small sizes fit c...
Feature(s): 2 pieces per pack Replaces many air stones in common box filters and undergravel riser stems The Power Agitator Flexible, porous air tubes with large surface area Provide powerful aeration and water agit...