Electronic monitors provide easy pH levels (they must be calibrated to the correct pH range first), which is handy for frequent testing. Some electronic monitors measure salinity (though you can also use a hydrometer or refractometer) or calcium. Electronic monitors are your best way of testing ORP - Oxidation Reduction Potential - which can be a useful way to monitor the balance of biological processes in your tank, and is important if you use an ozonizer.



pH Monitor $115.69	pH 10.0 Calibration Fluid $2.56	pH 4.0 Calibration Fluid $2.56	pH 7.0 Calibration Fluid $2.56



Pinpoint pH Electrode $58.46	Pinpoint ORP Electrode $72.08	Pinpoint Salinity Monitor $122.13	Salinity Calibration Fluid 53.0mS $15.38



Pinpoint AC Adapter Kit $12.88	Electrode Care Redox pH Cleaning Solution (Red Sea) $5.66	Storage Solution for pH and ORP Electrodes - 220 mL $9.89	pH Buffer Solution - 10.01 - 220 mL $12.17



pH Buffer Solution - 7.01 - 20 ml $1.01	pH Buffer Solution - 4.01 - 20 mL $1.08	1413 us-cm Conductivity Solution - 220 mL $12.17	pH Buffer Solution - 10.01 - 20 ml $1.08



pH Buffer Solution - 4.01 - 220 mL $12.17	Rinse Solution - Deionized Water - 20 mL $1.01	Pinpoint Nitrate Calibration Fluid Set $18.75	Phosphate Low Range Photometer $192.82



pH Meter with 2 Point Manual Calibration $82.90	Portable Dissolved Oxygen Meter $171.68	pH and CO2 Controller with Select Set Point $126.25	Double Junction pH Electrode $50.73



Probe Compression Fitting - 1/2 in. MPT $6.13	Eshopps Magnetic Probe Holder $30.44	pH Buffer Solution - 7.01 - 220 mL $12.17	Eshopps Magnetic Probe Holder - Replacement Magnet $10.94