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#1
09-23-2010, 08:33 PM
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What might these growths be? and removing harmful crabs.
The first pic is a sheet of fungus or something growing near the base of my Green Paly's. Should this be a concern?
The second pic is a growth on my LR right near bird's nest coral. It may be nothing, yet I don't know. It is round and appears almost like a bubble or marble. Any thoughts out there? Also, on the bird's nest, I have 2 resident crabs that came for who knows where. I think the symbiosis is cool, but am told they have to go. Is there a trick to trapping them? or is a pair of tweezers the only way to go? Last edited by newreefer_59; 02-07-2011 at 05:38 PM. 
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#2
09-23-2010, 09:01 PM
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the first pic looks like a sponge of some sort while the second is bubble algae...maybe valonia.
I wouldn't remove the crabs if they aren't causing any visible harm....especially if you think the symbiosis is cool... where and why were you advised to remove them?
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#3
09-23-2010, 09:07 PM
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Quote:
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#4
09-23-2010, 09:47 PM
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Should have mentioned the crabs resemble small tirantulas
hairy legs and eyes spaced far apart. There are 2 smaller ones that live on the birds nest and one much larger one that is very evasive. LFS has said to fluch 'em if caught - don't know how to catch these guys without damaging the coral. The damage they are doing is debatable as is kida tough to tell at times.
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#6
09-23-2010, 10:51 PM
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I would get rid of them, or a better solution (for the crabs anyways) would be to put them in your sump (if you have one). It certainly doesn't hurt to get rid of them, especially if you are not sure if they will be a pest.
One trick to catching them is just to put a glass leaning against the rock where the crabs hide, and put some food to attract them in the bottom of the glass. Crab goes in to get the food, but the glass is too slippery to get out. Sometimes it works, sometimes it doesn't.
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