Product Review

Notes:
Replacing the air stone every six months.
Please soak the air stone in water for about 30 minutes before usage.
If the air stone doesn't have bubbles in one part, please change the pump of higher power.
After a long-term usage, please clean it if bubbles lessen.

Specifications:
Color: Grey
Suitable for inner diameter 3/16"(4mm) soft tube.
Size: approx. 1.6 x 0.6" (40 x15mm)
Net Weight: approx. 1.14 ounce (32g)

Package Included:
4 x Air Stone