I'M CONVERTING A TANK THAT WAS PREVIOUSLY USED FOR FISH TO A VIVARIUM. THE GLASS AROUND THE TOP IS STAINED FROM THE WATER LINE. I'VE TRIED SOS PADS, RAZOR BLADE SCRAPERS AND EVERYTHING ELSE I COULD THINK OF TO REMOVE MINERAL DEPOSITS(?)FROM GLASS WITHOUT SUCCESS. IS THERE ANYTHING ANYONE CAN THINK OF THAT CAN CLEAR THIS UP?
THANKS,
DERRICK

