Cleaning my old acrylic tank. Stuff on the inside is coming off well with a microfiber cloth, water, and a gentle touch. On the exterior, twenty year old scotch tape that held my background is proving itself a bear to get off. After googling, I tried some WD40 on the tape near the bottom of the tank - below the substrate level - with some success. And I didn't observe any harm to the acrylic. Removing the tape near the top of the tank has been a slow slog. I tried using my hairdryer and the edge of a credit card - and I imagine that I will get there eventually - but I thought I would ask the community for recommendations.
Thanks, Bill