Green Striped Mushroom (Actinodiscus sp.)

[zero1]

Hello to all,
I am new here just trying to get acclimated to my new surroundings.
I am in braking down my 90 gal reef and these Green Striped Mushroom (Actinodiscus sp.) have taken over,i am looking to get rid of them!

I dont know how to post the pis yet

Please bear with me i am new at this

Thanks