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hi all I've had my SW tank now for about 2 years. The other day i spotted something under the LR. It was a crab, a big one. It amazed me that I had never seen it before. Is it ok to have this crab in my tank. I can't get a picture of it but it's about 1.5" in diameter on it body. Brownish...

Hey all, I have had a few fish in my tank for about 6 months now. It seems that my cowfish has spots that come and go all over him. They are little white spots. They will be on him for a week and then go away. When I added two new fish to the tank a month ago, they did fine for about 2...

I have something growing on my LR. I believe that it is Cyano. It is a very dark red carpet that started next to my featherduster. If it is cyanobacteria, will it do alot of harm to my tank. Also, on my other LR there is some more stuff growing. It's greenish and yellowish, kinda reminds me...

Hey I know that thiese are probably simple newbie questions but I have to ask them. Idon't have a d-camera I've suddenly got a large amount of brown sediment on my rocks and sand. And I know have hundreds of tiny little worms on my glass, the average is about 5 mm long and the thickness of a...

SW tanks are a whole new experience. I just started mine not to long ago(4 months) and Iv already killed two fish, my others are not looking good(except 1), and my starfish looks like something out of a horror show. I got ich so I treated my tank with rid-ich(not a good move but I don't know...

I had ick in my tank so I added m-green. I knew that this would stress out my tank but I didn't think I had a choice. Since I added it my chocolate starfish's horns have turned white and fallen off and my featherdusters have dropped their tails. What I wanted to know is will my starfish and...