How can I remove water scaling from a fish tank? Answered
I currently work at a pet-shop, where we're turning over inventory. And guess who gets to inherit the 25 gallon, high-style tank that's been on display for 6 years and was so scummy the manager took one look at it drained and said, 'no way, you've got a new apartment, you take it home'? That's right, me. So now I've got a tank, and I've gotten everything in it cleaned out except for this top edge of what I assume is water scaling. I've been trying to clean it for over two weeks, and gotten desperate enough to even try vim and kitchen cleaner, and it just won't come off. Please, help?