Originally Posted by fishy head
fresh water; not salt water
First and foremost, if you are using a hydrometer, test again. Once the hydrometer is full, take it out and TAP the back of the hydrometer several times, in case air bubbles are causing the reading to be incorrect.
Is your tank fresh or saltwater?
If it is saltwater, the next question is, is your water level at the top of the tank or do you have room to add water to the tank?