Whats this on my BOP

[NewbyReefer]

My BOP started to stn on me so I pulled the whole thing out. It looks like mold or something growing up it so I cut what was good off and trashed the rest. Any ideas what it might be?

 

[Laddy]

Dead tissue?

 

[Oldude]

To me it looks like the starting shoots of a nuisance algae called dictyota. The link below shows some images of what it looks like when it matures.
http://www.google.ca/search?q=dicty...hNsKRiQK19YHYAg&ved=0CC8QsAQ&biw=1280&bih=857
Once it takes hold in your tank it is hard to control and can quickly overgrow corals & the only fish I've found that will eat this and keep it in check is a naso tang.
For future reference there is no reason why you couldn't cut those live tips off that piece of S.hystrix and grow them out.

 

[FoothillCorals]

Dead tissue +1

 

[Oldude]

What exactly are you referring to? The squiggley lines? If so I stand by my original answer. In all my years of experience with sps I have never seen dead coral tissue look like that.

 

[NewbyReefer]

What exactly are you referring to? The squiggley lines? If so I stand by my original answer. In all my years of experience with sps I have never seen dead coral tissue look like that.

I agree its not dead tissue as I know what that looks like from my last tank crash. But I don't think its the type of algea your refering to. The one you referanced is a type of seaweed and if i did happen to have that I don't think it would only be on the BOP.

Here's what I'm talking about.

 

[Oldude]

It may have just come in on that piece.