My Oaisis II hot tub stays at 103 and now it's dropped down to 68 degrees for the past 3 days? Could there be a problem with my heater element? Or is there a sequence of resetting the temp buttons on top of the hot tub?

Information on the care of your product and troubleshooting is available here:

http://www.oasisleisure.ca/customer_care/SpaCare.html

Did you have a recent power outage? It is necessary to reset the temperature after a power outage.

Check the temperature setting on your hot tub; if it has defaulted do to a power outage reset to the desired temperature. If it is still set at your desired setting and is operating at 68 degrees then there is a problem that is preventing the tub from reaching the set temperature.

Some possible causes and actions are:

Pull filter (see if light comes on) / Replace filter
Knife valves not fully open / Open knife valves

Pressure switch cut of calibration / Adjust pressure switch
Faulty Pressure Switch / Replace pressure switch

Air leak, check pump suction line / Tighten pump union
Heating element corroded / Replace element

Faulty control panel / Replace panel

Find the Manual for you specifc model for more explansyion on Troubeshootig.