Toadstool turning yellow at its base?! What’s going on?

[Theshivinator]

Hey Everyone !

 

I made a post about this in my aquarium Journal but also wanted to make a separate post to see if I can get some suggestions

 

My toadstool seems to be turning yellow at its base. I just noticed tonight , but during the day it opens up with full polyp extension and looks healthy.

 

Does this look like it’s rotting ? And if so what should I do ?

 

All other corals are happy & healthy .

[Tired]

Oh, that doesn't look right. Is there anything nearby that could be stinging it? 

 

It almost looks like a sponge or something is growing up its base. Is it possible the yellow is something encrusted onto it? 

[Theshivinator]

8 hours ago, Tired said:

Oh, that doesn't look right. Is there anything nearby that could be stinging it? 

 

It almost looks like a sponge or something is growing up its base. Is it possible the yellow is something encrusted onto it? 

Nothing nearby . 

 

That is a sponge of some sorts growing under its base . Is it possible that could be it ? Would it have a negative effect ? 
 

 

[Tired]

No, I mean I wonder if the yellow area itself is actually a sponge. How closely have you looked at it? 

[Clown79]

Fleshy coloured leathers often look yellow when they shrink/shrivel up.

 

When i purchased mine it was sold as a yellow fiji but once it was happy and expanded in my tank it no longer has the yellow to it.