This was a great read. I can't wait till my L273 are large enough to breed. Can someone recommend a book to read on
Pseudacanthicus and their breeding requirements.

I was wondering if you can sex 5" Pseudacanthicus L273 by examining the Papilla.
And if so what is the differences?

I don't know if this will help, but I just bought 3 L273s (Pseudacanthicus Titanicus) for 80 US dollars each.

I am no expert by any means, but maybe it is a bad genetic trait that skipped the parents.

Interestingly, neither of my two Korallias came with the attachment for the cage, so they only have a fairly open design at the front. I'll have to try to get my hands on the front parts. They should have come with a little plastic circular screenlike piece that snaps to the end/front of it. With 1 ...

I have used the Koralia 850 and 1200 for over a year and never had any issues, I do put all attachments on that came with it though.

The one thing I would definitely NOT do is dump the water from the lfs into your tank.