Aqua Medic pH Calibration Fluid 60mL Style:pH 7 or any of the other

or any of the other headaches of starting a new filter

- the external controller can be placed in a position away from the pumps to make it easy to use and allow for very simple programming

Self-priming pump & self-cleaning impeller

Starts and maintains intense biological activity remove toxic ammonia

FEATURES Amphibious – Dry or Wet Mount Motor with Overheat Protection Wear-resistant Ceramic Shaft Silent

Aqua Medic pH Calibration Fluid 60mL Style:pH 7 or any of the otherThe accuracy of all electrodes is dependent upon their calibration. To ensure accurate readings, all electrodes need to be calibrated at regular intervals. To ensure that the fluid values used to calibrate the electrodes remain constant, regular replacement of these fluids should occur. The pH calibration fluids come in 3 variations pH 4 pH 7 pH 9