Replacing 10-15% of your total tank volume (including sump) every 1-2 weeks is the best way to maintain healthy water conditions in your aquarium. This step-by-step video shows you how easy it is to perform a routine water change for marine and reef saltwater aquariums.

Read reviews and learn more about aquarium salt mix in our store:

http://www.marinedepot.com/salt_marine_sea_synthetic_mix__index-ap.html