Question algae or something else

Ok so question, I have a piece of LR that I decided to make a Zoas island type of thing. All of the sudden my zoas started to get a white type of sponge around them growing through them but now it looks like it is overtaking them. And I am not sure it is a sponge because I took it out the water and put it back in and the thing is still there. Then I noticed that my zoas are not doing as a great and I saw within the LR a very very thin looking thing yellow string like anemone but not really an anemone it is a like a yellow string super thin like hair algae but not hair algae i know i am rambling but its weird... its like a filamentous yellow string that spawns from within the LR i thinking it retracts when i touch it but cant really put money on it.... sorry any ideas?
water parameters are all in line...

 

Can you post a pic of the white stuff?

The yellow string sounds like a spaghetti worm possibly.

 

Sounds like sponge and a spaghetti worm.
I'm having issues with sponge on one of my zoa frags too.

 

this is the yellow looking thing i was talking about.... Going to try and post a pic of the white stuff in a sec

 

this is the sponge looking thing but def not a sponge since i took it out of the water for a few mins and put it back in and it is still spreading like crazy starting to suffocate my corals

 

bump

 

Some sort of macro algae and some type of sponge.

 

it cant be macro algae it retracts when I touch it...