Underwater Treasures Aquarium Check Valve

One power outage can siphon tank water straight back into your air pump and ruin it. The Underwater Treasures Check Valve is the cheap insurance that prevents it: a one-way valve that stops back-siphon dead, protecting your pump and your floor.

Add it to your airline and stop worrying about the next power blip.

• One-way air check valve
• Prevents back-siphon into your air pump
• Fits standard aquarium airline tubing