3 weeks..maybe they hatched? the babies are super small and sometimes hard to see. do you have any fish in that tank? and filter intake covered?
Yeah I figured as much. I had the fish before I knew more about shrimp. I am working to at least get rid of the danios. I read that after about a week of growth neon tetras have a hard time eating them.They're mostly being eaten, but a few are probably hiding in the bushes.
No fish other than otocinclus are safe for baby shrimp.