Lee's Discard A Stone Coarse Bubble Air Diffuser, 100 Pack

Lee's Discard A Stones are disposable air diffusers that make coarse bubbles for aeration. This 100 count pack suits shops, clubs and hobbyists who run a lot of air-driven filters.

• Makes coarse bubbles
• Works as an aeration device in undergravel and corner filters
• Disposable stones with reusable inserts for attaching airline tubing
• Pack of 100 stones

Attach the insert to your airline tubing, fit a fresh stone and replace it when it clogs.