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FAQs about Sea Pens
Related Articles: Sea Pens,
Related FAQs:
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Care of Atlantic Renilla sp.
12/28/07
Howdy Crew -
Found a couple of half-dead Renillas that washed ashore a few days ago. We seem
to have recuperated them in a tank with 6" of local sand (very fine/silty). Any
recommendations on long-term care?
<Mmm, not finding much on the net re these Pennatulaceans practical care... Are
microzooplanktivores... predated by some Seastars and urchins...>
Namely, would like to replace the existing sand with that from a mature tank
(aragonite bed), and add some live rock along the edges of the tank for
nutrient/waste turnover. No other stinging organisms in the tank; can connect to
a plankton reactor for constant flow of food.
<I do think you're on the right path... or at least have vision of it. I would
read what you can... more generally... re Sea Pansy, Sea Pen care...>
Thanks..
-A
<Welcome. Bob Fenner>
Sea pen with a BTA 10/12/05
Hi guys
<Hello Daniel>
If I put a sea pen on the other side of the tank from my bubble-tip anemone, is that OK? Or will they eventually find each other and have a
sting off?
<Daniel, I don't know how experienced you are, but Sea Pens are moderate to difficult to maintain in the aquarium. They do require a deep sandy bed, moderate to strong lighting, frequent feedings of micro-plankton, and additions of iodine, calcium, strontium and other trace elements in order to have a chance to survive. It is not recommended that you keep anemones with corals or other similar animals as the anemone will eventually move and sting them. James (Salty Dog)>
Sea pen coral unhappy ?
I've just added a sea pen coral to my reef tank. when I saw it at the LFS,
it was beautiful and looked a lot like a xenia. its just been in my tank for a
few hours, but its shown very little activity and looks a lot like a
flesh-colored cucumber or a hot dog. its begun to plant its "foot" in the
substrate and a few polyps have started to open up. other than that, its very
"limp" and its stalk is at a 90 degree angle with the "foot:" in the substrate
the rest of the body falling over onto the sand.
<Very typical for Pennatulaceans to "act" this way on being moved... and they do
de/inflate periodically... most a turgid only at night time>
I'm really hoping that this type of coral
<Mmm, not a "coral"... a pet peeve of mine. Please read re>
just acclimates this way but for some reason I am very worried. I've got decent
water flow and when the coral is not directly under a 96W PowerCompact, it has
its very own 3/4W blue LED moonlight.
<Uhh, not photosynthetic life>
if you guys could shed some light on my situation, I would greatly appreciate
it. it literally just looks like a brown, bent pickle, haha
thanks guys
<Read re these animals on WetWebMedia.com
Bob Fenner>
Sea Pens 10/17/03
First off, thank you for the time you spend helping out people like me. I
have searched Google on Sea Pens, namely Cavernularia. I have found close to
nothing. Though your site has a few lines about them, it is not enough to go on.
I was wondering about light, water movement, and food requirements. Anything
else you have would be helpful. Thanks...
<not much has been published on this unique creature because it is
staggeringly difficult to keep in captivity for long. Few see more than a year
old in aquaria with most dying well before that. They too often get put into
rocky reef aquariums with many other corals that chemically if not physically
outcompete them. They also require very deep and mature sand beds (6-8"
deep and one year old minimum) in nearly fishless systems or with massive
refugia to supply plankton and nutrients. Sea Pens naturally occur in soft
substrates like mud flats and are not found on the reef proper. Frankly, I
regret seeing many collected at all. To be available just for aquarists that
special order them for dedicated species tanks only in my opinion. My advice
would be to post on some of the big message boards looking for lurkers with
experience to share if you will be kind enough to set up a species tank for your
intended specimen(s). Anthony>
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