View Full Version : emerald crabs and coraline algae
keyozoxmfc
09-20-2006, 11:39 PM
hi i have an emerald crab and i bought a lot of fiji premium rock...and it seems like my emerald is eating it. a large amount of spots that were once purple are now white. it started when i added him. and i saw him picking at it? anyone know whats wrong?or any ideas of another thing that is making it dissapear? and there is a small patch of hair algae that i was hoping he would eat too.
thanks
MARK
To me it sounds like after your rock was exposed to air the coraline started to die off. It happens to my powerheads when I take them out to clean them. Most likely it will start to grow back as the tank matures.
keyozoxmfc
09-21-2006, 06:54 PM
but my rocks were fine before..and the coraline started to disappear after i got the emerald crab..andi saw him picking at it?
CarmieJo
09-21-2006, 08:23 PM
Hi keyozoxmfc,
I don't have an answer for you but I did want to say :welcome: to TR.
how long were the rock in the tank before you added the emerald crab?
and how long ahs the tank been setup
BradJ
09-23-2006, 11:47 PM
I had 2 red mithrax crabs that did the same thing. I had to remove them. They were completely cleaning coraline covered rock to pure white.
I also have a small green one without any problems. I think it just happens with some crabs. I would get rid of it.
m8298
09-25-2006, 08:01 PM
What are your Calcium and Alk readings???
keyozoxmfc
09-27-2006, 07:19 PM
tank has been up a month and a half....my calcium is at 400-420 and my KH is at 10-12..but i got rid of the crab and exchanged it back at my LFS for another one...now this one seems kinda sluggish...lol i have the worst with these emerald crabs..but i do have astrea snails and blue legged hermits
randyk
10-18-2006, 12:59 AM
While they prefer hair algae, emerald crabs will eat purple coraline algae as well, especially if there is not enough hair algae to feast on.
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