The siphon is assembled the same way as when the beer was transferred to the secondary fermenter. This time the beer is transferred from the secondary fermenter to the bottling bucket. The siphon is assembled from several parts. The racking cane and the siphon hose. These should fit together snug to prevent air leaks. The set up to the right uses a length of stiff plastic tubing on the other end of the hose which facilitates reaching the bottom of the bottling bucket during siphoning. Another racking cane can be used for this purpose as well. This is necessary because aeration by splashing must be avoided at this stage. The siphon is filled with clean water, and clamped with a spring clamp right above the racking cane. This helps to prevent the water from flowing out before inserting the racking cane into the beer.
The beer is siphoned to the bottling bucket using gravity. The priming sugar has already been poured into the bottom of the bottling bucket, which allows for the siphoning action to stir the sugar in during the transfer. It is important for the priming sugar to become well blended, and it may help to gently stir the beer in the bottling bucket with the end of the siphon tube as the beer flows into the bucket. Do not splash and aerate the beer at this stage because oxygen will spoil the beer when it is in the bottle.