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Old 12/21/2011, 09:04 PM   #126
Gibbnal
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Asternia Star

So how quickly can these reproduce in a small tank? One thing I am learning is that if you see one small creature on your rocks, there is usually another one in there somewhere.


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Old 12/21/2011, 09:33 PM   #127
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They'll reproduce pretty quickly, usually by dropping legs that turn into new starfish.


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Old 12/23/2011, 02:29 PM   #128
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what are these orange "cracks" that move around in the back of my pod tank? they look white in this pic.




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Old 12/23/2011, 02:36 PM   #129
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are they good or bad to eat


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Old 12/23/2011, 08:28 PM   #130
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Okay, I'm looking to find an ID on two creatures. One I have no idea what it is, the other i know is a starfish, but just dont know what type.. In the picture, in the middle, right next to the small white spot on the rock, is a small orange-ish colored creature that I am thinking may be a sponge??

diagonally up and right of him, right next to the large white area of the rock, is the starfish. He is pink and green. Pink in the center and the legs have a greenish tint to them. TIA




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Old 12/23/2011, 08:37 PM   #131
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I don't see what orange creature you're talking about.
The starfish looks like an asterina.


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Old 12/23/2011, 09:15 PM   #132
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Would the asternia be a bad one or a good one? Some of them eat corals right?

The orange guy is facing horizontally, and is to the right of the small white spot on the rock. He looks more yellow in the picture than Orange. He has two red spots on him near his base.


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Old 12/23/2011, 09:23 PM   #133
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No way to know on the asterinas until you catch them eating coral. Sorry, I don't know what the other thing is from the pic or the description. To me it just looks like the red spots are coralline algae on a small bit of rock. A really close up clear pic of it would help, but I know that's not always possible.


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Old 12/23/2011, 09:29 PM   #134
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Well, that is the best picture I could get of it unfortunately..the only reason i am leaning towards sponge is because I have no lights on my tank, it's fresh off a cycle, and I can't really think of anything else that could be thriving in that environment.


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Old 12/26/2011, 11:13 PM   #135
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Zoa eating Nudibranch and eggs




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Old 12/26/2011, 11:26 PM   #136
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And that spiral above it is its eggs.


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Old 12/28/2011, 01:00 AM   #137
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what is it?

Found this guy on my snail. Moves fast when the light hits. Has some antenna or feelers. Looks clear but might have picked up the green color from the flash.




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Old 12/28/2011, 01:22 AM   #138
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Looks like an amphipod which is great, they're smaller crustaceans that are a great source of food for the other inhabitants of your tank.


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Old 12/28/2011, 01:27 AM   #139
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Quote:
Originally Posted by BDSM View Post
what are these orange "cracks" that move around in the back of my pod tank? they look white in this pic.

Most likely they are just really fine bristle worms, as long as they don't get oversized they shouldn't pose a threat to anything.


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Old 12/28/2011, 06:22 AM   #140
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Hi guys, lots of things starting to pop up now...

Any idea what these 3 x things are?


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Old 12/28/2011, 11:32 AM   #141
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Pics are too small to tell 1 and 3. 2 is a featherduster, harmless.

BDSM, not sure what those are (guess I missed that post). Not bristleworms since they don't branch like that. Could be some type of bryozoan or ctenophore.


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Old 12/28/2011, 09:18 PM   #142
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Thanks (as always) SushiGirl...

Don't suppose you happen to know what this green hard type of substance is that has also just sprung up overnight. Is most prominent on the rock in the attached photo, although I have noticed small patches on my other rocks as well.

BTW, the cycle is now at around day 13.


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Old 12/28/2011, 09:58 PM   #143
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It may be green coralline. I have some in my tank that's a little darker than that.


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Old 12/28/2011, 10:40 PM   #144
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Ok, cool... I thought that Coraline was mostly pink/purple, so am just wary of anything unknown (which admittedly is quite a lot given that this is my first saltwater tank haha).

The guys down at my LFS don't seem to be worried about anything. They just said to leave it all alone, no water changes, don't worry about algae, critters etc. You can just get paranoid somethimes when you read about things that you HAVE to remove from the tank before they spread/etc

Can't wait until I get to the point where I can just know what everything is and whether or not any action is required


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Old 12/28/2011, 10:48 PM   #145
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oops, double post.


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Old 12/28/2011, 11:14 PM   #146
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Coralline comes in all colors. Over the years I've had pink, purple, green, tan, orange, red, white, and maroon. I've heard of blue, but I've never had that. I think the pink/purple is just what ends up liking tank conditions the best.

I'm still not at the point where I know what everything is, and sincerely doubt I ever will be...there's just too much out there!


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Old 12/29/2011, 10:08 PM   #147
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Does anyone know what these are...?

#1 White/clear tubes
They're translucent / clear white tubes and they're all over the place in the shadows on one side of my tank. I'm hoping they're some sort of sponge rather than hydroids. I've never seen a feathered crown or any movement, but they appear to be growing quite rapidly. They're not rock hard, but they are quite stiff... I waved the magfloat near them and they wobbled a little in the current.




#2 Lines in the sand
I'm guessing these are caused by some sort of worm or maybe just trapped gas in the sandbed? I was curious if anyone knew any more. They're very small... my sand is quite fine (Pink Fiji)




#3 Algae Strands
I've got a lot of this popping up in my Nano. It feels and looks a lot like chaeto. Can chaeto grow like this in the DT if it escapes the sump? It is often a single strand which starts curling around itself... kind of like green pubes, for lack of a better term! I'd like to know if it's a good guy or not before I move some of my nano LR over to my new tank.




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Old 12/29/2011, 10:17 PM   #148
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Your IDs are all correct. I don't know what kind of worms those are, but I've seen them before.


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Old 12/30/2011, 12:37 AM   #149
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Oh whew! I've been so worried about those sponges!

Thanks so much Sushi!


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Old 12/30/2011, 02:14 AM   #150
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1. I don't believe the tubes are hydroids either. 2. Yeah, I would think those are just from some worms or other life in your sand bed and wouldn't worry about them. 3. I would say that is definitely chaeto.


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