My family gave me a 55 gallon tank because during out 'blizzard' they lost power for 5 days and in the end of it all there fish died. They emptied it and gave it to me but it has alot of calcium i gess that is what it is on the filter and glass. What should i use to clean this up was going to use dish soap then rinse it off over and over but figured i should ask quick first. Thanks ahead of time 