Hi, I'm curious as to whether you use chemicals in your grey tank or feel that it is not necessary. My trailer is almost five years old and I sanitize my fresh water tank and I use drop-ins for my black tank, but I have never used anything in my grey tank. I think the fact that my grey tank basically only gets soapy water in it, that that is all it needs. I would like to read about your experiences and opinions on the grey tank issue.
Note: If you do use chemicals in your grey tank, what do you use [brand and type] and how and where do you install it. [ kitchen sink, bathroom sink, or shower drain]