Water quality in the aquarium is of upmost importance and the aquarist needs to do everything they can to ensure that the water qualty does not drop to below par levels.
Water quality is measured in many ways with probably one of the most important being the water which is used to mix with the salt – in this instance reverse osmosis water.
The majority of reverse osmosis units are made up of numerous stages. Each of these stages has a function the main one of which is the [tag-tec]reverse osmosis membrane[/tag-tec].
The other stages used are normally along the lines of a pre-filter (sometimes called a sediment filter), a carbon filter and a DI stage.
The pre-filter and the carbon filter are normally located prior to the membrane and the DI unit located after the membrane.s