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I got this refractometer from drsfostersmith.com, it was on sale and I have been wanting one. Anyways I was reading how to calibrate it and it says I need distilled water. Can I use tap or bottled or does it have to be distilled. Just wondering before I go running out to the store to buy a...

I have no clue what this thing is but it can retract back into it's hole or tube or whatever. This is as far as I have seen it come out so far.

I am trying to find some empty hermit crab shells to place in my tank. I have a few small hermit crabs and want to get some med-large shells. LiveAquaria only has large right now. Saltwaterfish.com sells them in lots of 50 or 100. I was going to get the 50 for 7.99 but then I saw that will...

It's probably to early to get an identification on a crab I just saw but I'll give it a shot anyways. It was tiny, like the size of my pinky nail or a half cm. It was white/beige and fuzzy. It's body was similar to a sand crab that you would see at the beach. I couldn't get a picture and I...

I got a piece of LR yesterday that had mushrooms on it. I have identified several things on it including serpent stars, fan worms, etc. but there are these little strands of what look like fiber optic filaments sticking out of it. There is no way for me to get my camera to zoom in on them at...

I went to the LFS yesterday to get some snails and hermits and walked away with a few other things. I got a rock covered in polyps and a rock covered in mushrooms. The rock with the polyps also had a small snail hidden on it. The one with the shrooms has some aiptasia on it and I am buying...

I bought a rock that has a whole bunch of mushrooms, feather dusters, etc. on it. Well, it appears that it also has a few little pest anemones/aiptasia on it. How do I get rid of the Aiptasia without hurting the mushrooms and everything? Can I get them off with tweezers or something? This is...

Well, the tank has been up and running for about seven or so months. I have a few snails and an urchin which all came with the rock. I will propabably be adding a little more live rock a piece or so at a time over the next two months. I also am ready to look into a clean up crew but I'm not...

Okay so I have seen a couple arrow crabs in action and think they are awesome looking. I really want to get one and just wanted to get some opinions on them. I have a 75 gallon with a yellow tang, clarkii clown, urchin, and a few snails. After a few loses I am ready to start trying to add to...

I stumbled upon this website while searching the web. It has a gallery of underwater photos that are really good. Just thought I'd post the link in case anyone else wanted to take a look. http://www.underwater-photos.com/pgindex1.html

when i first posted pics of my urchin it was still to small to tell what kind it was. well it is much bigger now so i am going to post new pics and see what you'll think. so here goes.......

I have a Seaclone 100 protein skimmer that does not skim. I have had my tank up and running since October and it still doesn't skim. I thought if I gave it time to break in and everything it might start working. What should I do?

Okay, I know that this happens to a lot of beginners. That a lot of people lose fish in the beggining but I just can't figure out what I am doing wrong. I have a clarkii clown and a yellow tang that were my first two fish. They have been completely fine and I have never had any problems with...

I think I have some kind of pencil urchin. It is only about the width of an eraser tip on a pencil. I have watched it move across the rock into holes. When the lights are on it normally stays in a hole or just in one place on the rock. These are the best pictures I could get for now. It is...

I was wondering if anyone could give me advice on what to feed these fish. Mine won't come out of his burrow yet (I have only had him a few days) and I tried to place some brine shrimp by him but he only gets a little before the other fish grab it. Will he eventually come out to eat, is there...

The first pictures posted are of what I think is a snail or something. It was there the day I took the picture and it has disappeared again. I was hoping to get some other pictures of it so these will just have to do.

I bought this clown from my local petco and they told me he was a clarkii clown. I looked at some pictures of clarkii clowns and they all looked a lot darker than him. I was just wondering if someone could let me know exactly what kind of clown it is that I have. TIA

I know it is not smart to have two arrow crabs unless you have a very large tank but what about other invertebrates? I really like the look of the arrow crab but was also interested in maybe two cleaner shrimp. Does the arrow crab pose a treat to anything other than another arrow crab?

I am setting up a reef aquarium and have done a lot of reading and researching. I am trying to decide what fish I want in my aquarium but have read a lot of things that contradictory. I am looking for fish that are are reef and invertabrate safe. The fish I am interested in are dwarf angel...

I put crushed coral in my tank today and it left it cloudy. I rinsed it and got it as clean as it would come. Will the tank filter itself out? It there anything I can do? :?