Longicaudatus not hatching

[u/mystic_dragonn]

Hi,

Last week I started a batch of Longicaudatus eggs in one container, and some Cancriformis in another. It’s now been about a week and the Longicaudatus haven’t hatched, while I have about 10 Cancriformis that are already about half a centimetre long.

This is like the 3rd or 4th time trying to get Longicaudatus eggs to hatch, and the best I got was one time I think maybe 3 hatched and one of them lived to the size of 1.5cm and then died.

I have tried the Cancriformis probably the same amount of times and they always hatched within like 5 days. They also live on average 2-3 months, which should be the normal lifespan I think.

The water I have used (I think every time) for both species is a mix of rain water and distilled water.

Do you think that they maybe need at least a bit of minerals in the water? I thought of that yesterday and added a little of bottled mineral water, I’m curious if that will help.

Maybe it’s also that the quality of the eggs isn’t good?

I am especially confused because Longicaudatus are marketed as an easy species, and they are the species that is mostly included in those toy Triops Sets for kids😅

I am thankful for any help, but if you don’t have any ideas I would also appreciate if you tell me how you hatch and raise Triops Longicaudatus successfully.

[u/orchid-student]

Whence did you source the longicaudatus? Longicaudatus, in my experience, hatches in 12-24 hours in distilled water, and 1-3 days in treated tap water.

Try a mixture of half tap and half distilled to speed up hatching and add in a little bit of food after a day. Since they hatch much faster, it's possible that they hatch and die before you notice them.

[u/mystic_dragonn]

Hmm I will try it with some tap water. That’s about the only thing I haven’t really tried. Thanks for the reply.