20 gallon Blichman Mash Tun question

SavoryChef said:

How much water is underneath the false bottom?

Would it be feasible to make 5 gallons of 3.5% beer in the 20 Gal when the mash volume would only be 3.32 gallons or so? I'm mostly referring to the water to grain ratio?

Thanks

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SavoryChef said:

I don't own a 20 gallon Blichman so that's why I'm asking.

The water to grain ratio matters if there is 2 gallons of space under the false bottom when doughing in at 1.25 qts with 8.5 # of grain.

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SavoryChef said:

I don't own a 20 gallon Blichman so that's why I'm asking.

The water to grain ratio matters if there is 2 gallons of space under the false bottom when doughing in at 1.25 qts with 8.5 # of grain.

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Mtn_Brewer said:

I have both a 10 and a 20 gal Boilermaker that i use then for 5 and 10 gal batches, respectively. They both work great. There are several reasons not to use a 20 gal Blichmann for a 5 gal batch:

The larger surface area will make the grain bed very thin with little filtering ability.

The large volume of the pot in relation to the amount of water and grain makes maintaining temps more difficult.

The Brewmometer will be to high above the mash to be useful.

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SavoryChef said:

I batch sparge and direct fire rims with a temp gauge on the out of the spigot, so in your opinion would that even matter?

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