Two pack of 2 Way Gang Valve Professional Edition For Aquariums, Terrariums, and Hydroponics 2-Way Gang Valve Professional Edition For Aquariums, Terrariums, and Hydroponics With Airline Tubing Connector High performance 2-way gang valve with accessible flow control knob that allows you to easily set the air flow to your desired rate Easy to use and a built in mounting bracket that fits most aquariums, terrariums, hydroponic systems This gang valve can be used for aquarium, terrarium, hatchery, aquaculture and hydroponic applications Additional items to consider for your pet Fish or aquatic pet: Aquarium Masters airline tubing, submersible heaters, round air stones, Bio rings, Eco Plus Air pumps, betta log, Blue Spotted Betta Leaf, betta food, and fish food