I well be getting a free 29gal used fish tank set up from a friend. I told him the proper way to clean it to make sure it is safe to use for the next fish. He send me pictures and there is VERY thick lime all over it, running down everywhere. He was not good at taking care of it....>.>
Right now he is doing the lime juice and vinegar technique and using a razor blade to chip at the thicker stuff. Is there anything more I could tell him that could help in getting rid of all that thick build up? I really would like it off the front of the tank at least.