how do i clean my acrylic 240 gal ?

[pogiboy67]

i have a 240 gal tank... will 12 gallons of vinegar and the rest of the tank filled with water be enough to scraPE all the coralline off? thanks

[Konadog]

If the tank is empty, lay it on its side and add a few cups of vinegar directly to the acrylic. Let it sit for an hour and then scrape everything off. Be careful not to get stuff under your scrapper that can scratch the acrylic. Then do this to each side of the aquarium. You should only need a gallon or less to do it this way.