I have looked at the rotifers - there are two problems 1) they don't keep still and 2) given the high level of magnification the depth of field is minute. This means that as the rotifers swim from the top of the water drop to the bottom they go out of focus. I played around with them for an hour or so last night before I gave up - I tried soaking up some of the water with some tissue but I kepy soaking up the rotifers as well You can see them quite well - it's just difficult to get a good picture.Be interested to see the rotifers under the USB Microscope to get an idea of how it goes on smaller things.
The last couple of nights my pair of occelaris have had spells of madly picking at a section of rock near where they sleep. I hadn't noticed this behaviour before. Is this possibly a sign that they're preparing to nest? Or am I being overly hopefull?
The cleaning of the rock is a good sign - but whn they might lay eggs is a different question :)