I have, get a little hot dog roller and a can of acrylic paint(color of your choice).
Depending on the size of your tank you may not need a extension pole,
I had to use one. A screw in broom handle will work too.
John @ Sea Creatures in N.Prov. sells a vinyl stick on that is great. Once applied no salt creep can get behind it. Takes about 5 minutes to put on & cure.