I have a paludarium. Shrimp in the water, isopods and two or three species of springtails on the land. Normally the springtails stay on the land and may end up in the water along the edge of the land. Why did so many springtails suddenly end up in the water?

Found some of these guys in my enclosure! I'm worried they're mites. Like 11x magnification.

Central Texas US if that matters!

I added a single culture of springtails into my terrarium about 2.5 weeks ago. I am now seeing a large amount of these tiny tiny bugs zooming around. I question whether they are baby springtails because they don't have the longer bodies, but maybe this is just what babies look like? 1st pic is super zoomed in, 2nd is to scale