Lees Discard-A-Stones are disposable air diffusers with reusable inserts for attaching to the air line. The Coarse Bubble Diffuser creates a flurry of large bubbles; for smaller bubbles, use Lees Fine Bubble Diffusers.

• Excellent aeration device for all aquariums
• For use in under gravel filters, corner filters or just as decorations.
• Safe for fresh and saltwater aquariums

Includes:

• 6 Count: 6 stones and 4 inserts
• 100 Count: 100 stones