Salinity
From RTAW Reefpedia
(Redirected from salinity)
| Water Parameter | |
| Salinity | |
| Unit(s): | ppt |
| Target: | 33 - 37 ppt |
| Danger: | - |
| Tendancy: | Increase |
| Increased: | Evaporation |
| Decreased: | Top off |
| Testing: | Weekly |
| Maintenence: | Pure water |
Contents |
Introduction
Salinity is the measure of the amount of salt in the water and the units is parts per thousand (ppt). The salinity of seawater varies around the world, but on most Indo-Pacific reefs (including Australia) the salinity is around 35 ppt. This means that there is around 35 grams of dissolved salt in one kilogram of seawater. Notes that for scientific applications, the definition of salinity is somewhat more complex.
Salinity is typically approximated by measuring the specific gravity of the water.
Gallery
 Devices for measuring specific gravity/salinity, clockwise from bottom, refractometer, swing arm hydrometer, salinity meter and floating glass hydrometer. |
Resources
- Conversion Table for Specific Gravity to Salinity by Ronald Shimek - Reefs.org
- Salinity and Temperature by Craig Bingman and Rob Toonen - Reefs.org
- Temperature and Salinity in Maintaining Coral Reef Aquarium Animals by Ronald Shimek
- wikipedia:Salinity
