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I have what Ophiura identified as a possible Ophionereis reticulata (about five years ago). It has been extremely durable but now has split into two apparently functioning "half stars" which continue to navigate about the tank each night and eat. Could this be asexual fission or something I...

Does anyone know if 1/8 inch mirrored acrylic can resist the heat from up to 200 watts pc over a 20 long?

So many continue to refer to their lighting regime as the number of watts per gallon despite its relative uselessness. I have not, however, seen much, if anything, that is practical and relatively simple that quantifies lighting intensity with consideration to the tanks height. So here is what...

Could this be Ophioderma brevispinum? If not any ideas as to what it may be are greatly appreciated. It came in on Gulf rock and over the past 18 months it has grown to 5-6 inches across. What can I expect as a final size? Sorry for the quality of the pics. It seldom shows more than a...

I happened to walk by the tank tonight and when I looked in I saw what appeared to be a limpet orgy/mass spawning. In one spot there was a stack of three limpets. The bottom limpet would spurt out a series of semi-thick "packets" of white liquid and one of the two atop is one would release a...

I felt this was a more appropriate place to post my response to the quagmire of a thread in the reef forum, and if it needs to be deleted I understand completely. Generally, I avoid even reading threads about religion and politics but this time I could not restrain myself. Science and religion...

It has been a year and a half since the tank was established. To this point I have restricted the livestock to Caribbean only specimens. I knew this would be difficult but not impossible; however, it has been more difficult than I expected, particularly to stock the tank at a resaonable...

Does anyone have any experience or knowledge about arca reproduction in captivity? The tank is anout 1 1/2 years old and there were five turkey wings on the rock. About a month ago I noticed the larger (now about 2 cm in length) of the two in the photo, in the center. Yesterday I noticed the...

I've had this guy for about a month and over the past 3-4 days this has developed. He is in a five gallon tank of his own with only a peppermint shrimp for company. He eats well even now and will anything he is given, flakes, pellets, frozen, freeze dried and live amphipods. His breathing is...

Does anyone have a preference of one over the other? Which is best? I currently use Selcon but Zoe is cheaper.

I came to check-in on the progress of my water change a few hours ago only to find a legion of peppermint shrimp larvae in the tank. I can only hope that a few might make it in the refugium. The green tint in the photo is DT's.

I think I have narrowed it down to cerith but I'm not certain. Anyone have any ideas? Here are some pictures.

Here are some shots of my 3 month old 10 gallon. It's a Caribbean tank so the selection of available livestock is a bit slim but I like the challenge. Full view.

Anyone have an ID for these. They resemble miniature sea lillies, but they are only a few millimeters tall. I have others photos but this is the best of the closest.

Just to update. System contains a 10 gallon tank and 5 gallon refugium, 20 lb. live sand and 15 lb. rock, both from the Gulf. The refugium is presently empty except for sand. I've added 20-25 ml of phyto each day since Thursday, when I added sand and rock. Thursday evening ammonia read .6...

Does this look like a turkey wing? These aren't the best pics but without removing the rock or moving the tank I can't do much better.

Has anyone had any experience with cycling new lr with the help of phytoplankton? In theory it seems that it would be a benefit in several ways; however, is it worth attempting, even if for experimental purposes?