I think some of the ones I have left have bacteria on them that I can sometimes get off buy "hosing" them with the dropper in the jar. But for sure I see white dots on them that I can remove sometimes.
And when you say change the food, how long do you leave the frozen mysis/kirll in the tank for them to eat? I would leave it for at least half a day. maybe that was too long?
And I'm down to 8 megalopa today, 2 per jar. The ones that haven't eaten each other I think died from bacteria.
![Sad :(](./images/smilies/icon_sad.gif)