Fermenting a 20L batch into a bigger fermenter ?

[Garage12brewing]

Hi everyone !

I brew with a 50L Braumeister and I just bought a shortened malt pipe that gives me the ability to make smaller ( 20L ) batches for testing new recipes. Testing on a 45L scales is kinda risky sometimes...

When doing regular 45L batches... I ferment into my 60L conical fermenter which have glycol cooling system to control the temperatures.

Would it be risky to use this same fermeter to ferment only 18-20L of wort ?

I dont have anything to shoot some C02 in the fermentor but that could be an idea I just got ? Good or bad ?I still have a smaller fermenter but without cooling system...

Thanks !

 

[Tobor_8thMan]

I don't believe having a large amount of head space in the primary is cause for concern. Secondary, et al, possibly, but not in the primary.

 

[Mer-man]

No, headspace is not a problem. But if you have a cooling coil inside the conical, make sure it is submerged.

 

[Garage12brewing]

No, headspace is not a problem. But if you have a cooling coil inside the conical, make sure it is submerged.

Its a cooling jacket I am fine thanks !!

 

[Garage12brewing]

Is the oxygen lighter or heavier than the CO2 produced by the fermentation ? Do you think that the C02 produced by the fermentation will push all this volume of oxygen out of the fermenter ?