silversides is what i feed mine,I really wish u would have wated a while b4 u got the nem,there for advaned aquariast and that high of nitrates im suprised ure fish are liveing.Dont wait till this weekend to do a waterchange do it now!! or everything will die.The nem is prob. a gonner due to the fact they die slow.So please do a waterchange,not for us but for the nem.
Beginner aquarist need to relize we are takeing alll our livestock from the ocean,when one dies u go get another one wich depleats the number in the ocean<im not trying to bash on u,or critisize you.But please research every move u make in this hobby.
Coral reefs are fastly dissapearing it is up to us the hobbyist to be responsible,thrue coral propagation,and tank bread fish
So please do the water change now!!!