How do I get rid of this gray slim sponge?

pbanda

New member
This gray stuff has been slowly taking over my tank for the past 2 years. My sps can't compete with it... What is it and how do I get rid of it? I am at the point of taking the rock out and sunning it ouside for a while to kill it.

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Last edited:

pbanda

New member
Scrapping is a lost cause... is the sun the only option? I don't think anything will eat it...
 
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