What in the heck is this?

[bvanfish]

I have two questions 1 my hammer corals base is like bloated and looks like swollen but it’s open and happy and all solid? That’s pic 1

question 2 I had a coral on this super glue but moved it is this coralline algae growing? Don’t Ming the gha I am working on it haha.

tank is almost 7 months old and sps is growing and nem is growing etc

 

[Cichlid23]

For the hammer it almost looks like a sponge it starting to grow around the base, I could be wrong however, maybe try messing with the lights to get some better pictures. And for the second picture that looks like coralline algae.

 

[Stupidkitty84]

For the hammer it almost looks like a sponge it starting to grow around the base, I could be wrong however, maybe try messing with the lights to get some better pictures. And for the second picture that looks like coralline algae.

I agree. It looks like a sponge. I have a similar sponge (size of a quarter but thick/puffy) growing on the underside of a large favia war coral.

2nd pic, the pinkish purple patch is def coralline.

 

[bvanfish]

Ok cool! I just haven’t seen any coralline on my plastic yet but I’m seeing spots like that on my rocks so I didn’t think it was. But that’s a great sign!

got it so a sponge. Should be harmless right?

 

[Stupidkitty84]

I'm not that familiar with sponges and their negatives but that sponge is a little too close for comfort, its right on the skeleton/flesh edge. It could irritate or smother your hammer as it grows. If it were my hammer, I would take a surgical scalpel and cut away the sponge outside the tank in a container filled with tank water, then give it a quick rinse in tank water in a separate container then plop the hammer back in the tank and hope it doesn't grow back in the same spot.