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HowieB
07/15/2013, 05:17 PM
Are these some kind of eggs? They are the size of marbles. They feel like rubber and have been in there for about 3 months. I think they were smaller when I first saw them.

cloak
07/15/2013, 05:18 PM
Valonia, aka "bubble algae."

Check this out.

http://reefkeeping.com/issues/2002-02/hcj/feature/index.php

colortrilogy
07/15/2013, 05:19 PM
Looks like bubble algae.

HowieB
07/15/2013, 05:31 PM
Thanks for the quick answer. I read the article you referenced. I will probably remove the rock it's on, pop them off and rinse the rock well before putting it back in.

Deberber
07/15/2013, 07:58 PM
Also if you want to put a crab in there to make sure it doesn't come back, an emerald crab is always beneficial.

cloak
07/15/2013, 08:32 PM
Emerald crabs are 50/50. More miss than hit IME. Manual labor right before a water change has always treated me well.

Deberber
07/15/2013, 08:44 PM
You mean with them eating the bubble algae?

crsswift70
07/15/2013, 08:45 PM
Some emeralds will eat the algae, but they leave bits floating around that can start up new bubbles. Unless you plan on keeping emeralds forever, it's probably better to manually remove them.