Crystal Grain Question

[Milhouse]

I am brewing an all grain recipe that is asking for 1 lbs of Crisp Crystal 45 and 1/2lbs of Crisp Cystal 77. My Homebrew supply only carries Crystal 40,60,80. Should I just round my grain bill out?

 

[Brewsmith]

Use the crystal 40 and 80.

 

[Soulive]

I'd just use 1lb of 40 and 1/2lb of 80. Calling for Crystal 77 is absurd IMO...

 

[Milhouse]

Thanks guys I will.