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So this morning my angel is covered in this white stuff and isn't doing too well. What is it and what should I do?

Hi everyone. I currently have a 4 gallon reef tank with an emerald crab, hermit crab, two snails, and a barnacle blenny. I was wondering if there are any starfish that may be suitable for this size tank.

Hi I bought this star fish a while ago and was told by my LFS that it was a sand sifting star. I don't think he is as he never goes in the sand and stays on the rocks/glass. I think he might be a tan fromia but there is some debate. Does anyone know for sure? Thanks!

So when I bought this starfish I was told it was a sandsifting star. It has never once sifted any sand and stays on the glass or rocks. I am thinking it is a tan fromia but there has been a lot of debate. Does anyone here have any idea? Thanks for your help!

I have a 46 gallon bowfront reef tank with a sump containing bioballs. I want to add a refugium but my sump is too small and hang ons are small. I have room to put a 10 gallon aquarium behind the sump but I am not sure how I would make one into a refugium and connect it to the sump. Any...

What is the minimum size tank you would suggest putting these in? Would it work in a 4 gallon nano reef tank?

Hi. I'm thinking about starting a dwarf seahorse tank and I know they only eat live baby brine shrimp. It seems very time consuming to do this twice a day so I was thinking about putting a continuous hatch and feed in the tank...

Hi, I just started by very first nano reef. It's approximately 3-4 gallons and it currently cycling with some live rock and live sand. I was hoping to get some peoples input on a good light to get for it as well as some corals and maybe a good fish. Really any advise from experienced nano...

Hi. I have a small blue hippo tang that has developed black spots maybe white spots (depends on the light) and mostly looks like the blue is peeling off. I would take pictures but you can't see anything in the picture. Does anyone have any idea what this might be or how to treat it?

Hey can someone please tell me what this critter is. I found him on my glass today and I don't know if he is harmful to my reef tank or not. It looks like he has cob webs or slime coming from him.

Hey, does anyone know of a good website or websites to purchase corals and/or anemones at reasonable prices? Also I would love to get a christmas tree worm rock. Thanks for your help!

Can someone help identify this gorgonian for me. All I was told was it was photosynthetic.

I just bought this rock that had these two pieces of coral on it. I was informed that they were both a type of mushroom but when I try to get there actually names online I cannot find anything that resembles them. Can someone please help identify these for me. Thanks!!!!