Im 6 foot 4 & 94 kg .How much canned tunna can i eat a week? can i eat daily? ( 105mg dha & 15mg epa per can)?

i workout 3 days per week and I need more protein in my diet, canned tuna seems like the cheapest, quickest and easiest way to do so, i'm concerned about the mercury content of canned tuna (in brine) what is the maximum amount i can eat without out getting unhealthy levels of mercury in my system