Hey Tony.....our red "passed" away not too long after purchase
...unfortunately when we purchased it it was pulled quite hard off the bottom of the tank....I think that there may have been some injury to the foot, it never did settle and attach and slowly died. We thought that we were ok and were quite optomistic that even with the hard removal it was eating and doing "ok" but just never settled....
the weird thing with our blue was that it was doing incredibly well, eating, HUGE, hosted by 2 of our 3 clowns, had it for several months, then suddenly after the red was purchased and expired it went downhill quickly. We check all of our water parameters often and nothing was out of whack so it is a bit of a mystery. Sad though as it was stunning and did so well for so long. The tank was fairly young when we added the blue to it but we had no choice after an incident in the tank it was in.....we will have one again as it was so amazing but will wait until the tank is more mature....I don't really think that was the problem but it is the only thing I could think of that would have done this.....we also found a large shell from a fallen hermit in it when we finally decided to remove it as it was not going to come back......when I see threads like this it makes me want one again so badly! Yours are stunning as usual!