In a word, no, that won't work. Different bacteria. You'd have a foaming mess that would take days to clean off your floor.
To start, empty tank, clean thoroughly with white vinegar, keep just about only your heater, but clean thoroughly, sell the rest...including the canopy in some instances. You'll need an open top, new lights, probably, no filters, 125 lbs of aragonite sand and 125 lbs of base rock/live rock combination; ideally a downflow box---[reef ready would be better: holes drilled for hose and piping]---and a 30-50 gallon sump tank below; a skimmer rated for at least 175 gallons, and a lot of patience.
My advice would be to keep your tank and invest about 300.00 in a one-in-all number like an aquapod while you see if you even like marine tanks. An aquapod contains all the gear you need to get going except the rock and sand; you can learn the ropes and operate on a small scale, until you figure how deep into this you want to get.