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This is quite a bit bigger than an asterina. Has 4 legs. Any ideas? Sent from my iPhone using Aquarium Advice

Thanks!

Can you help identify what kind of birdsnest this is exactly?

Yeah that looks to be the same. The guy Gave me the whole piece that is shown. You can see how the top has it's color whereas the bottom has no color at all. Can I expect to see the whole piece color up?334

I realize that a green slimer is an acropora but I have two different types of acropora that were both given to me and both were given claiming to be green slimers. The smaller one is hard to see in the picture but you can clearly see the other. Any ideas what acropora these are exactly?

That's the first thing that I thought but honestly the people that I got this from have numerous chalices and were adamant it wasn't one. If so exactly which chalice would you guess it is?

That's the first thing that I thought but honestly the people that I got this from have numerous chalices and were adamant it wasn't one. If so exactly which chalice would you guess it is?

The people I got a frag from our convinced it is not a chalice. Chalices don't encrust like this does.

Anybody know what kind of coral this is? It encrusts like an sps, but has eyes or polyps like an lps or chalice.

Yeah you are riggt

Any idea what brand/make/model this skimmer is?

I am setting up a 90 gallon reef ready tank with this ADHI 30 gallon sump/refugium (ADHI Model 30 Refugium - FREE GROUND SHIPPING!* :: ADHI :: Sumps :: Champion Lighting & Supply). From what I have heard, the overflow gph rate on the reef ready tank is right at 700 or so. With that, I have two...

Any way for them to come back? They were in a tank that I bought from someone else.

Any help id'ing this? Looks almost like white zoanthids but the growth looks different.

Thanks. So if I was to sell that piece in the second picture, how much should I ask?

Anybody have an ID on this Birdsnest coral? My best guess is a ponape birds nest but this doesn't have the pink tips. I've been told "bright green" but that doesn't seem right.

Are sponges like this a good sign? Or just to be expected in a reef tank?

I just happened to see this today. This pic is the best I can get a this was taken from the back of the tank. Is it a sponge? What's up with the hole?

Ok that helps. Thanks.

If it is in good conditions will it re-color? And if so, how long?

What's interesting is that they are at the same height in the tank. Is it possible to stress sps by moving it?

I recently moved my tank from one room of my house to another. All of the corals did fine except one colony of purple montipora digitata. Ironically I have two colonies, one larger and one smaller frag that was originally a part of the larger colony. Ever since the move the larger colony browned...

Is there any way to know the brand?

Definitely not a coral or fish, but I'm wondering if you could help ID the brand of this 55 gallon tank. I want to drill it, don't have polarized glasses, and can't see a brand. Looks like it was built in 2004. I want to drill the back, not the bottom as I'm assuming that is tempered. Any help?

So looking at the plumbing that the guy gave me, it seems that he had the return pump in the middle section. The first section was where the skimmer and phosban reactor was and the third section he had chaeto in it. The plumbing had the return line going up to the tank and to the chaeto. That...