I would recommend reading this:

"Host Sea Anemone Secrets" by Dr. Ron Shimek
Paperback: 24 pages
Publisher: Marc Weiss Companies, Inc. (April 18, 2001)
ISBN: 0966454952
$8.99 at www.amazon.com

It is very condensed, thin but informative.
You can read it during one evening and never
do another mistake with sea anemones... ;-)