Substitute for ChaetoGro/Chaeto grow?

[Azra]

Hi everyone!
Wanted to ask what would be good substitute for ChaetoGro in macroalgae tank?
I am located in Europe (Croatia) and can't get hold of Brightwells ChaetoGro nor Continuum Chaeto grow.

 

[demonclownfish]

In contrast.. I need some chaetoDontGro. I can't stop this crap from growing hahahaha

 

[Subsea]

In contrast.. I need some chaetoDontGro. I can't stop this crap from growing hahahaha

Try peroxide.