Coralline Algae

[Cameronb_01]

Hi Guys,
 
I have drained my tank completely in preparation for converting it from Tropical to marine. However the whole thing is covered in rock hard coralline algae. It is 450L so a vinegar bath is not really an option and razer blades aren't helping at all.
What should I do? Please help me ASAP! 
 
Thanks in advance for your replies.
Cameron
 
P.S Would Chlorine or Bleach work?

 

[gmc1]

You have coralline algae in your tropical tank?.i am confused.do you have a pic

 

[Cameronb_01]

Sorry I meant Green Dot

 

[gmc1]

Are you sure a bare razor blade won't move it.it does work better under water right enough.

 

[Cameronb_01]

I have managed to get it off now. I re soaked the whole thing with a jet hose which got some of it off anyway and then the razer blade finished the job.
Thanks everyone for your help.

 

[gmc1]

No probs.please give pics of your new marine set up.