mweber21 - I'd really advise getting a refractometer. I had the Red Sea hydrometer too, and like all of that type, they are OK for a start, but aren't the most dependable for getting accurate and dependable results. The float can be affected by temperature and bubbles and current. The refractometers are much more accuarate and are quick & easy to use. I think that a refractometer is one of the first things that most people upgrade. They aren't really very expensive and are a good investment. Check around for prices - this is just one as an example:
Refractometer
I think that's the one that I got shortly after setting up my RSM.
One of the reviews:
"I purchased this refractometer from ...... I couldn't live without it now. It's easy to use. I have found that the hydrometer can be off by as much as .004... a big difference if you are keeping some invertebrates. I highly recommend this to add to your reef equipment. "
So, your salinity might actually be higher, or lower, than what you're getting with the hydrometer.