Need a lil help with this please.

[underwaterfirefighter]

Does anyone know what this white stuff is. It just starting growing in this one spot about a week ago. Is it good, bad, or nothing to worry about?
Thanks, Dave

 

[Brad Syphus]

Looks to me to be sponge growing, and is beneficial to your tank.

 

[underwaterfirefighter]

Thanks Brad. I had thoght (hoped) that as well. Never had sponge like that before. I get the little yellow sponge more than any.

 

[stylaster]

ya i agree looks like a sponge