Tubes that screw in or have metal prongs at each end? I don't know of any fluorescent bulbs that are 25 watts but regular incandescent bulbs can be 25 watts.
If the bulbs screw in and look like regular light bulbs then they are useless for plant growth. If you had a lot of them it would work, two - not a chance.
However you can go back to the store and buy fluorescent screw in bulbs that will support plant growth. I don't know how many you need over a 55 gallon tank but this type of bulb works very nicely in pairs for 10 gallon tanks.