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Are Salt Water Aquariums More Difficult Than Fresh Water Aquariums


There is a common rule of thumb among aquarium stores that salt water tanks are more difficult to maintain than fresh water tanks. However, this is not necessarily true. Jellyfish tanks are easier to maintain than many fresh water tanks because jellyfish have such a low metabolism. People think salt water tanks are difficult to maintain because they give you the option to keep some very advanced, exotic species. However, having a salt in your tank does not mean you have to keep more difficult fish. For example, the Red Legged Hermit Crab is extremely hardy and can't live in fresh water.

The only extra work required by every salt water tank is maintaining the salinity. Our jellyfish tanks have very low evaporation rates, so maintaining salinity takes only a few extra minutes per month. Simply check the salinity before doing a water change. If it is near the maximum threshold of jellyfish (1.028), you add some fresh water in addition to the replacement salt water. This will bring the salinity down. If it is near the minimum threshold for jellyfish (1.024), you add some aquarium salt in addition to the replacement salt water. This will bring the salinity up. Be sure you don't use tap water in a jellyfish tank. You can use filtered or distilled water or water bought from an aquarium store.