Can anyone help me identify this?

[dsea863]

At first I thought this might be at Tasia but then it started to grow and spread out and I'm not sure what it is .I'm new to reefing , so thanks in advance for your help.

 

[blaxsun]

It looks like sponges.

 

[dsea863]

Uh oh ! Aren't sponges bad fro a reef tank ? Should I remove it ? Thanks

 

[Reefing102]

Best I can tell appears to be sponges. I wouldn’t worry about it. Most will come and go on their own as food sources balance. Generally they won’t cause any issues in my experience

 

[ISpeakForTheSeas]

Uh oh ! Aren't sponges bad fro a reef tank ? Should I remove it ? Thanks

Most sponges are totally harmless - only a few really cause any issues.