<a href=showthread.php?s=&postid=11139893#post11139893 target=_blank>Originally posted</a> by Jon in SW Ohio
Check your alkalinity and salinity too, blastos are always the first to tell you something isn't right with your params.
In my experience this is not true

I recently had to move a 4+ year established system into a new tank, with new new sand and plumbing. For the first month and half my alkalinity was like a rollercoaster ride bobbing between 7 and 10 dkh and the pH rose and fell even harder than that from 7.9-8.6 . Durring this time my acro colonies were hit the hardest, half suffered alkalinity/pH burns on the tips some a good inch down, even corals that I thought were short of bullet proof were almost lost, and some were lost.
All the while, my blastos wellsi stayed plump, fully expanded and colorfull like they were oblivious to any indifferences at all.
Blastomussa merletti on the other hand are found and collected in higher light areas, and protected areas of turbid waters, sometimes not even really protected. Meaning there requirements are nothing like their cousin the wellsi.
Chalice are a crapshoot. First off there's at least 5 different specie I can name off the top of my head that are considered chalice, let alone the ones that arent coming to me right now that are too considered to be chalice. This is important as they arent all found and collected in the same place, thus have different light and flow requirements and tolerances. Most chalice I have seen doing well are found in the middle to bottom of the tank of your average high intensity lit reef. Although low in placement, most are in direct light. Merletti, pretty much the same thing but again, are more tolerant to moderate flow and benefit from direct lighting unlike there cousin the wellsi.
Mysid, rotifers (rotifeast, my favorite), and cyclopeeze are all excellent choices for feeding almost all LPS, and should be considered once a week, provided water quality is not a trade off.
-Justin