Ok .. so most of them are dead... I done a water change and made it lower as soon as i saw it happen last night, the water temp was 19 and nothing wrong with the water, it had been change 5 hours prior and i had feed them 30 mins before i changed their water. I feed them BBS as usual nothing different, the water is the same as it is every day and came from my bucket that i keep next to them the night before already treated. The BBS was the same as my other containers of baby's got {different age's} and so was the water. Nothing has happened to them. There are 3 golden albino's in separate small tub's, 30 one week old larvae and then the container of my 70 3 day old larvae and they were they one that this happened to. There container is a flat 10 litre container big enough for them all. They had a air stone on very low only one bubble per second, done with a "G" clamp on the tubing line. I took that out as soon as i saw the air bubbles but made no difference. The dead baby's have tiny little hooked tails and their body's seem curled backwards. There are still some alive one's that are swimming crazy then sinking and swimming again, also some just floating and about 6 that are not doing anything but I'm not sure if they are dead... I cant understand this, there nothing i done different and all the rest of the baby's are fine... the tap water is the same as usual and the water i used for the change had been sitting in a clean bucket for 24-36 hours covered by a big plastic lid from another type of container... I'm devastated :'(
Does anyone know what happened? or what I should do with the rest that are still flipping around? should I cull them? as I don't think they will survive and they look in horrible pain.. :'(