| There is a common rule of thumb among aquarium | | | | you add some fresh water in addition to the |
| stores that salt water tanks are more difficult to | | | | replacement salt water. This will bring the salinity |
| maintain than fresh water tanks. However, this is not | | | | down. If it is near the minimum threshold for jellyfish |
| necessarily true. Jellyfish tanks are easier to maintain | | | | (1.024), you add some aquarium salt in addition to the |
| than many fresh water tanks because jellyfish have | | | | replacement salt water. This will bring the salinity up. |
| such a low metabolism. People think salt water tanks | | | | Be sure you don't use tap water in a jellyfish tank. |
| are difficult to maintain because they give you the | | | | You can use filtered or distilled water or water |
| option to keep some very advanced, exotic species. | | | | bought from an aquarium store. |
| However, having a salt in your tank does not mean | | | | Salinity will only go up due to some of the fresh |
| you have to keep more difficult fish. For example, | | | | water evaporating, so once your salinity is within |
| the Red Legged Hermit Crab is extremely hardy and | | | | 1.024 and 1.028, you will never need to add aquarium |
| can't live in fresh water. | | | | salt. Once you have salinity above the minimum |
| The only extra work required by every salt water | | | | jellyfish threshold of 1.024, you don't have to ever |
| tank is maintaining the salinity. Our jellyfish tanks have | | | | worry about the salinity being too low again. Don't let |
| very low evaporation rates, so maintaining salinity | | | | the misconceptions about salt water tanks keep you |
| takes only a few extra minutes per month. Simply | | | | from trying jellyfish. Caring for salt water fish can |
| check the salinity before doing a water change. If it | | | | range from very easy to very difficult and luckily |
| is near the maximum threshold of jellyfish (1.028), | | | | jellyfish fall near the easy end of the scale. |