Lee's Discard-A-Stone plastic air diffusers keep aquarium water circulating with columns of oxygenated air. Coarse bubbles keep water from stagnating. They are an excellent aeration device for use in under gravel filters, corner filters or just as decorations. Includes adapters for airline tubing.
The product was exactly what I ordered and at a very reasonable cost.
By Miriam P.
DISCARD A STONE BUBBLE PACK
June 19, 2014
Have been using this for years, but now item is not carried generally in pet stores. Probably newer items have replaced it. It is a pleasure to discover it available through PetGuys, with very fast deiivary.