Hi, all. I'm looking at purchasing a 150 gal tank from craigslist for a steal. It looks like it wasn't cleaned very thouroughly before being broken down so there is a white scummy residue all over the inside. Will I be able to clean it off? What's the best way to approach this stuff?
Some older drug stores sell boric acid in a powder form. You can add 1/2 tsp per gallon to the water and just fill the tank with it.. You can also use a product called 'Ph Down' mixed as per instructions and let the tank soak. (rinse well before you add fish though! Trace amounts will not harm the fish, but rinse well to be on the safe side.)