First turn your heat down to 82. There is no need to have it 86. Second your shoe box is not right. When feeding the fry fresh hatched BBS the first few days you have to put tons of it in. The fry nearly have to just swim into it. They will eat it fine and you should not lose very many. Also cut down on the amount of light a little. Check out the following link.
-john
http://forum.simplydiscus.com/showth...light=shoe+box