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I had 3 emerald crabs in my tank at one time. Two of which mated and I had little offspring going every where. The fish ate all of them, so i thought. But one survived. Its red in color and thought it would molt and be green like normal emerald crabs. But instead, it molted, red in color, and...

I've had a pair of clownfish for about 8 months and never any sign of ich or any disease or infection of any sort. I have 2 clownfish and a psuedochromis in my tank. The psuedochromis loves to swim through the LR. But, when a clownfish gets to close to where hes at - they go opposite ways. But...

Does anyone know if a AC30 powerhead will fit other models? I want to house chaeto in a AC70 or 110 but its alot cheaper if I use the AC30 parts on a Ac70 or 110 case. What will fit? intake house the same size? powerhead mount different diameter?

**Title** Fuge HANG on setup for chaeto I'm currently using a aquaclear 30 with a modified back. It is now holding about two times as much water. The problem is there is not enough room for the Chaeto to grow and plus my light is longer then the AC unit. Thoughts 1. Buy a AC 70 and modifiy it...

Light vs Algae we all know light can effect algae, but my tank water is so cloudy. I had a good setup with all the equipment needed to run a good reef tank. Nitrates would build, but that's basically all. I had a 13 watt 7100k light (20gal tank) and thought I could get some benefical growth...

Has anyone seen how two Emeralad crabs mate? I cleaned out my tank and put only inverts, fish and anemone in the tank. I noticed two crabs did something strange. One crab opened up his bottom while the other got in-between the seperated crab and starting "humping". Did they mate? *The bottom...

I have a Sgt. Major that is about 2 inches. He is a energetic fish and is not getting along with my reef tank and fishes. Free for anyone who wants him. Local pick up only in Maryland. Able to swim sideways to fit under rocks and ledges.

I have a Sgt. Major that is about 2 inches. He is a energetic fish and is not getting along with my reef tank and fishes. Free for anyone who wants him. Local pick up only in Maryland. Able to swim sideways to fit under rocks and ledges.

I was wondering what methods there are for lowering Nitrate levels in a tank. I have very little ammonia spikes. But the nitrates keep getting higher, and currently at 20ppm. So, What are natural methods of lowering nitrates, without a refugium sump with algae. water changes? specific plants...

I have these brown spots appearing on one side of my tank and spreading to the other. Pic- Algae? I have a 20 gallon tank with 121watts of 10000k lighting water quality is good Fish do eat alot. (possible cause)

Whats up people. I just recently bought some live rock and placed it into my tank. Its a cured fiji piece. I noticed there is a small littel creature jumping around. It has a exoskeleton and acts like a flea. Bounces around among the sand and rocks. Its to small for me to get a picture. Any...

Does any have a "sleeping" anemone? I have a Pink tip haitian that will recess it's tentacles into it's base and sleep for a few hours. About every day and a half it does it. Normal? and Why?

What is a good product for making movement on the water surface? A small powerhead? Is there anything made for the specific needs of little ripples/waves?

Another Ich question. Note - air bubbles are on its dorsal (top front fin) Flash made the spots look as if they are white. They are dark to human eye with lighter color in the center also has white feces around the gills the skin appears to be redish Ich OR Bacterial?

I recently bought a clownfish and seems to be sick. At first he had the normal signs of stress due to being transported and placed into a new tank. Which is normal and thought he would get over it. But I looked closer and noticed he had a few spots on his tail fin. So I thought I would give a...