Who here puts on gloves before they put their hands in their tank? In the Conscientious Marine Aquarist (book by Robert Fenner) he says "I urge you to wear dedicated rubber gloves when working in your system to prevent inadvertent pollution from arms, as well as protect you from getting scraped by sharp objects and avoid possible health issues." I'm wondering if this is necessary - I always scrub my hands/arms of any soap residue, I don't use lotion anywhere near water change day, etc. It seems like it would be so cumbersome to wear gloves. But now I'm wondering about these "possible health issues" that he doesn't elaborate on.