Hi - got an email last nite from dcp (good parent) concerned about tuna melts I serve about once a week due to mercury levels. I've read ages 18 mnths to 4 yrs can have about 2 oz which is more than they actually get as its also mixed with mayo and topped with cheese on bread. I offered to her that if she's concerned, I can just leave out the tuna and top with cheese. I put it on organic spelt bread so fairly healthy even without the fish. Do you guys limit tuna in your menu? My guys love it, especially her kid. TX!