Ammonia and pH Monitor!
February 12, 2015 - 10:55
There is a new monitoring system available for Koi ponds that measures pH and KH3 (not TAN), as well as temperature and water level. It graphs the results of pH and KH3, and sends alerts to your phone or computer. WOW! More info and the web site link below the break...
Visit their web site for full information about the device!