PH Aqua Sensor

The AmmoniapH sensor enables visual monitoring of toxic ammonia (NH3) and pH levels in aquaria water on a continuous basis. Simply attach it in a visible location with both sensor pads completely immersed. With initial use, wait 15 minutes for the NH3 sensor to hydrate and up to 24 hours for the pH sensor to hydrate before making first reading. Thereafter they respond quickly (1-5 minutes) to changes in NH3 and pH.