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I have been through your posts and have a couple of queries (sorry if you have already said and I missed it). What water source are you using? Did all the shrimps come from the same supplier? It is certainly odd that one variety of shrimp does well but others don't?? I feel your frustration though as I gave up with the shrimps in my TB tank after the heater disaster, as you know! I may be moving at some point and would then try again with the TB as I would have to shut down the tank anyway at that point, and I have the new substrate.....

no, what it does is kill off all the shadow panda and rwp, leaving only blue bolts. I haven't been able to achieve that nice mixed bee tank like you had.

Sorry to hear that! I hope you are getting enough baby shrimps to keep the colony going at a reasonable size?  

the short antenna ones eventually die

Are you getting and unusual shrimp deaths, or is it just the shorter antenna?