Not a good day for the fry...

So I ended up just having to fill the tank up twice as much and putting in a pre-cycled filter. I got test strips but they showed no ammonia I managed to get it all running.. so far I havent found any more deaths sense the two the night before but its harder to find them now they may have gotten sucked up into the filter. Many of them still dont have an appetite but now most are swimming again. We will see how they are in the morning.