ID Please

[bberman]

This is a new tank that has been up and running for about 6 months. It was set up with mostly dry rock and some live rock from another tank that had been pretty well cleaned when I had to run a copper treatment.

I am pretty sure this is some type of sponge - I know everything I have read about sponges is they are good, however, there are hundreds of these growing in my sump, I have seen a HUGE bloom in these in the tank as well. they are mostly in the lower flow areas... but I would really like to find a way to get ride of them. I just had a Cyno breakout and had to put some Chemiclean in the tank and turn the lights off for 4 days... I have 0 phosphates (which I know is prob not true since the Cyno) but I am running carbon and Phosguard in a reactor.

Any help with ID and how to rid the tank I would appreciate it!

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[Adam]

They're harmless filter feeders common to new systems. Once the silicates drop they will start receding. Lower flow and light areas is where they'll be.

 

[jennm]

You can manually remove them if you want to. Angelfishes will eat them.

They're good hitchhikers though - filter feeders. They are harmless and a sign of a healthy tank. IMO I'd let them be.

Jenn