PinPoint salinity monitors do require general maintenance in removing salt deposits and/or residues, especially from the actual electrode. The salinity monitors are also more accurate than refractometers, but less durable. If you do purchase the Salinity monitor I would also purchase the AC
adapter kit in case you wish to monitor continuously (battery drain can lead to improper readings otherwise). There are other brand monitors available for high-end users, but more expensive.
Depending on what your plans are for the tank inhabitant-wise, the usual test kits purchased are for: NH3
(mainly cycling), NO2
, pH, Salinity, Ca
, and PO4
. Some people will also include Mg
. Salifert, API, and Elos are often used, but higher end kits such as Lamotte or Hach are also available to hobbyists (expensive).