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I just installed a new wave maker in my aquarium and the change in current has caused my mushrooms to close up a little and I noticed two white growths under them on the same rock. I haven't noticed them before because my mushrooms are usually much bigger and cover them. Any one know what they...

I noticed white stick like structures growing on the under side of one of my live rocks. Any ideas as to what it might be. It looks like fingers I've never bought a coral that looks like this and have had the rock for almost 2 years. Sent from my SAMSUNG-SM-G900A using Aquarium Advice mobile app

I was checking my tank after the lights went off and noticed something walking (not crawling) across the sand bed in my tank it had lots of legs and a long pointed head. It looks like an insect to me like a centipede or something not really what I would call a worm. I'd say it was about 3/4in. long.

I noticed s change in my Hammer Coral two of the (hammers?) seem to have holes in the end and are a neon green now. Is that their mouth or something else.

I bought a hammer coral that was more of a white color when i got it and now it is darker (greenish) color is this normal or was it doing better at the LFS than in my tank. Or was it the lighting they have LED's and I have a T5 HO light. First pic is at LFS second pic is in my tank

I have a 56gal. column tank and currently I am running a HOB filter. I have between 55-60lbs of live rock. I am trying to decide between building a sump or getting a Fluval 406 canister filter. Which one would be better? I would like to cutdown on the water changes currently I change 10gal...

I have a short tentacle green plate coral that started turning white two days ago. At first it was just one streak when when I got home from work it is now about half white. It was eating fine I spot feed it three times a week. My water parameters are Ph. 8.2 Ammonia 0 Nitrite 0 Nitrate 20...

My nitrates constantly run high no matter what I do. Today I changed out 20 gal. of a 56 gal. tank and then re tested my nitrates and I get the same reading as before about 40ppm. The tank has been setup for 7 months and I have over a pound of live rock per gallon with a HOB filter and a protein...

I bout this rock with 4 mushrooms on it and now it has this dark gray thing growing on it with little bumps on it.

I just added a yellow wrasse on Friday and he went back into my live rock and I haven't seen him since today is Sunday. Should I worry or is this normal for them.

I have had a Sally Lightfoot Crab, Emerald Crab, & Peppermint Shrimp all die not at the same time. The first crab I bought was the Sally it lasted a few weeks then about a month later I found an Emerald crab in the tank he lived about a week. The peppermint lasted a few months. I noticed long...

I recently started adding coral to my tank and I just bought this Hammer Coral and the guy told me there was something in the center of it but he wasn't sure what it was. It extends a real fine fanlike thing out and pulls it back to its mouth. This is the best picture I could get.

I added a 1 Foxface Rabbitfish a week ago and 3 Green Chromis 2 weeks ago because they were supposed to be calm and not bother any other fish. But it seems that one of the Chromis is always pestering the other fish in the tank especially the Foxface now he is raising his fins trying to sting...

White bulging eye I noticed when I got home from work today that my Pajama Cardinal has a white film/bubble on one of his eyes. The other one looks normal. What is the matter with him & what treatment does he need.

My question is do Yellow Clown Gobies disappear into live rock for days at a time. I haven't seen mine in about a week. He used to hang out on one of the live rocks but now he's nowhere to be found. Or could one of my fish have eaten him? I have 1 Firefish, 1 Lawnmower Blenny, 1 Filefish, 2...

I had to move my live rock to catch my damsels today, and afterwards I noticed something in a piece of my live rock. I don't know what it is. Any ideas.

Does anyone have a easy way to catch Yellow Tailed Damsels. When I was setting up my new tank the guy at the LFS suggested these guys to help me finish cycling my tank. They were fine for about a month and then all of a sudden two of them killed the other one so now I want to sell the two back...

This showed up in my tank today any ideas. I can't tell if it's a piece off of my live rock something else.