ID please

[jiffy]

what is this white thing growing in the back chamber of my 29g nano cube?

 

[Reef lvr]

Mabey a crazy sponge??

 

[jiffy]

i was thinking it was a sponge, but will it be beneficial to my tank?

 

[Raggamuffin]

it's a NPS sponge it is a filter feeder and harmless.

 

[revhtree Verified Admin]

Yes sponge bob!

 

[jiffy]

might of hit a growth spurt when I started feeding phyto feast.