I've had persistantly bad tasting water from my integral fiberglass water tanks for the past couple years so this year decided to "take action". So far this has consisted of removing the many bolts and prying of the access plate on top of both tanks. There appears to be a heavy buildup of lime or calcium that's going to need to be scrubbed off before I can coat the tanks with epoxy NSP120. I'm thinking of trying vinigar or CLR cleaner but am open to suggestions. Also, the plates had a rubber-like gasket which was pretty deteriorated and will need replacing. Any ideas about a suitable product? I'd rather not use an adhesive sealant since it would be difficult to get them off in the future but I'm open for ideas. Thanks, David