Mushroom spread...how to remove it?

[Jakef150]

I have mushroom that spread...I need to remove it but it's way in rear on rock.

I want it to remove it some..

If you want some it's purple...free

I'm not sure what's the best way to remove it or zap it ?

Thanks
Jake

 

[Bryceandmandy]

razor blade

 

[Jakef150]

It will grow back after uses razor blades..

Last time I tried.. It release toxin into water also It grew