In my case it was the angels
stressing them, probably because of their size. My clowns are my favourite
and I will never add another angel to their tank, even when they fall out.
As long as water params are ok, one month in new tank should be enough for
them to settle by now, so just maybe it's the same problem. They are so
easy to stress out, with Ich always possible, that you could try clowns
with platies/cories and see how they get on. Mary

Thanks Mary

The only problem is apart from the cost of another sizable tank (Rio 400 is
about 5' long), I've got nowhere to put one.

The reason I had moved the Trops downstairs was because CL are my favourites
too :-)

Peter