This looks really interesting. I'm reading up on these shrimp now.
They're still doing well but no reproduction.
My wife's, which is identical to mine other than lighting (mine is sunlight and hers in LED) had 2/3 of the water evaporate during her Christmas break (she's an 8th. grade science teacher). The salinity tripled which killed the chaetomorpha but only two of the shrimp died as far as I could see. I went into her classroom and removed all the dead chaeto and replaced it with some from my bowl, cleaned up the glass, and will have to wait for the water turbidity to settle but I think the remaining shrimp will be fine. A testament to their toughness. Spring break we're going to cover the bowl to cut down on the evaporation.