My 1989 372 has aluminum water tanks that are now leaking. I started noticing aluminum oxide sludge in my filter. When I removed the tanks then they had many micro perforations that were seeping water. I have since come to understand that aluminum and chlorine don’t get along and the life Stan of aluminum water tanks is 10-15 years. Has anyone else encou teres this and how have you remedied this problem? Stainless steel tanks, new aluminum tanks, plastic tanks or bladders?