Buy from Amazon : http://www.amazon.com/gp/product/B001EHJO5K?tag=wayofcats-20 <br /> <br />American Marine PINPOINT pH Controller <br /> <br />The PINPOINT pH Controller is perfect for the freshwater planted aquarium keeper as well as the ser <br />Will control pH in both a downward and upward direction The user will select his or her own setpoin <br />110 VAC operation <br />Additional calibration flui <br />Replacement pH probe
