primary fermentation carboy not full

[MiBeerMan]

So I juiced around 2 bushels of apples and came up way short filling my 6.5 carboy up. I have just little over 4 gallons which is just shy of 2/3 full. How bad is this and if it is an option can i just add some store bought apple juice to fill it full? Its presently in the 24-36 hr campden tablet wait

 

[ShrimplyPibbles]

So I juiced around 2 bushels of apples and came up way short filling my 6.5 carboy up. I have just little over 4 gallons which is just shy of 2/3 full. How bad is this and if it is an option can i just add some store bought apple juice to fill it full? Its presently in the 24-36 hr campden tablet wait

I don't think that's bad.. when fermentation kicks in, I would think the gases being released would push any oxygen out and prevent oxidation. While the campden tablets are in.. the sulfites act as an antioxidant. You might get a little bit of oxidation between the two stages, I don't see why you can't add store bought juice though. Just make sure it has no preservatives in it.

 

[MiBeerMan]

thank you for reply. I really dont want to add the juice but i would if i had too. I spent a lot of time cutting up and juicing 2 bushels of apples.

 

[Maylar]

You'll be fine for primary. That head space will get filled with CO2.