new member to this forum and new to making cider, and loving it. I started a batch of cider to then add cherries to it during my 2nd fermentation. when i filled the 1 gallon carboy i did not take into consideration having room for the cherries. is it ok to syphon off into 2 1 gallons and have the empty space in the top of the carboy or is it ok to go ahead and add more apple juice to fill the carboys and now have 2 gallons of juice. plan on fermenting for about 3 more weeks.