Ok, so you have your hose pulled through bottom. We will not tighten our seal on the bottom of bucket yet, but will continue with the bellsiphon. Now its time to construct a tight fit between the container, the bucket, and something we call a bell siphon. The bell siphon will act as support in growing large trees (picture 3), as will the bolts we will fasten.

Making a bell-siphon for power... first steps

Measure the distance between the bottom of your container and the bottom of bucket. Should be around 5" or so. You want to cut the 3" pvc pipe so it is about 1" shorter than the distance to allow for endcap. What you are trying to do here is use the bell siphon as a pillar to support some of the weight of the medium and plant.

If your container is 5" off the bottom of bucket, then cut your 3" PVC pipe 4" long. Put the endcap on, and make sure the container can rest on top of the bellsiphon without breaching the airtight seal between container and 5 gallon bucket.

Keep placing the bellsiphon inside the bucket and placing the container inside on top of it, and recut the 3" pipe as necessary to form a good fit; you want to support the container without pushing it upwards breaking the vacuum seal.

This step is gonna be hard, so just let me know if theres any questions.


Picture 1 shows the bellsiphon properly cut with endcap on, resting in its spot on bottom of bucket. The container will rest on this.

Picture 2 shows the bellsiphon properly cut with endcap on, resting on its side on the ground.

Picture 3 shows a large cannabis tree vegging in a SB. These are heavy and require lots of support...

Picture 4 shows the bellsiphon properly cut, and resting under bottom of container inside bucket.

Picture 5 shows measurements taken of container and bucket, trying to establish a good length for the most support.