In a message dated 5/22/00 3:54:38 AM Eastern Daylight Time, Aquatic-Plants-Owner at actwin_com writes: << I have a 55 gallon that I bought as a leaker in 1973. I cleaned it out thoroughly, dried it, and applied the silicone liberally. >> Paul, Did you cut off the previous layer of silicone or just clean well and go over the old silicone? Inquiring minds want to know... Bob Olesen