Sera Air Set M - Air Pump Accessory Pack

The Sera Air Set Medium (M) contains everything you need to set up a single or twin outlet aquarium air pump.

Contents:

• 2 x Round ball air stone small (30mm diameter) - the most popular and commonly used airstone.
• 2 x Non-return check valve - to prevent water going back into the air pump during a power failure.
• 1 x Control valve - A tap to adjust the amount of air going into the air stone
• 4m x Silicon airline tubing - connects air pump (sold separately) to the air stone.