Adjustable Aquarium Air Flow Valves (10-Pack)

Precisely control oxygen levels in your aquarium with this set of adjustable flow valves. Designed for standard 4mm tubing, these durable plastic regulators allow you to fine-tune air delivery for optimal tank health. Adjustable flow control for precise oxygen regulation Fits standard 4mm air tubing securely Durable plastic construction for long-lasting use Easy to install and adjust with a simple twist Ideal for maintaining consistent air flow in small to medium tanks Perfect for aquarium hobby