HYDROS Control X4 (Controller Only) leak Add the Dissolved Oxygen Module:

Add the Dissolved Oxygen Module: PM3 to your Apex to allow continuous real time monitoring of your reef tanks dissolved oxygen levels

EdgeField™ Optics for Wide

With its compact size

6 – Royal Blue

HYDROS Control X4 (Controller Only) leak Add the Dissolved Oxygen Module:Please note CONTROL 4 ONLY Nothing else is included. Achieve Ultimate Aquarium Control with the HYDROS Control X4 HYDROS Control X4 is a powerful and robust aquarium controller capable of performing all essential functions needed to maintain a healthy aquarium without the need for extra expensive modules. Set up is quick and easy, making this ideal for both beginner and advanced hobbyists. Just one Control X4 can monitor temperature, pH, ORP, and