OKay I started cleaning my tank. I have done this before. I helps kill all the algae. Would it be okay do do this? Wash them in the dish washer? Could I use dish detergent or no? Thats why I ask because I never have used it before. Would it hurt the fish. Also I have some real rocks, if I scrub them by hand I scrub the color off. Even though they are real. I found out they fade. So could I put them In the dishwasher?