Well then it's a good thing she has one cause she is the only other person I know that has one. How long should I leave it in her tank? It's not going to be the same type of filter that she has on her tank so can I just put the peace in her display?
Salinity-The salinity of natural seawater is around 1.025. In the marine aquarium, and including the reef, we recommend to keep the salinity somewhat lower. 1.019 to 1.023 is where we keep most of ours. This is especially helpful to the fish with regard to toxic shock, and disease control. It slows metabolic rate in many different types of species, which some contest allows the aquarist an advantage for long term success. It's important to understand that stability is important with regard to salinity, too. Many trickle type filters require high water movement and have open sump areas where water is exposed to air. This allows for rapid evaporation, causing the salinity to rise dramatically in just a few days. Care needs to be given in the area of water replacement. This may have to be done every few days to maintain constant salinity. Many corals are especially sensitive to salinity changes and can become infected by a variety of diseases, or even die of toxic shock.