Hey SIP club! I wanted to share some build pics of a DIY bucket I made a few days ago. I'm currently growing 2 alaskan purples that are just taking their sweet time. Because of that I dropped 3 blueberry seeds and already have 2 of them above the surface. If I can get the blueberries to pass the alaskan purple, the blueberries will go into the sip buckets. Here's how I made them:
Material List:
5 gallon bucket
5 quart mixing bucket
1/2" PVC pipe (9" for each bucket)
1/2" slip x 1/2" male NPT PVC fitting
I started by drilling 7/32 holes in the side of the 5 quart mixing bucket. Note the holes drilled near the rim (at the bottom). Since this bucket will be inverted inside the 5 gallon bucket, there needed to be holes so it doesn't 'seal' against the bottom of the bucket. The rim will be cut off in a later step. With the rim cut off, this bucket allows for exactly 1 gallon of water and leaves a 1" air gap.
Next is drilling holes in the bottom (top) of the res bucket.
And using a 7/8" forstner bit drill out a hole for the 1/2" adapter.
Adapter installed.
And now the rim can be cut off. I just used a pair of kitchen shears and it cut very clean and easily.
You can see here when the bucket is inverted it doesn't seal against the bottom of the 5 gallon. The holes there allow the water to interface with the soil media at the very bottom of the 5 gallon bucket.
I cut some 1/2" PVC pipe so it sticks about 3/4" above the rim of the 5 gallon bucket. This happened to be 9". I also measured the height of the res bucket and determined my overflow hole needs to be 5-1/4" up from the bottom of the bucket. I used a 1/4" bit, which you can see on the right side of the following picture:
Next I used some black duct tape and taped up the outside of the 5 gallon bucket.
The final step was designing and 3D printing a clip that would hold the 1/2" fill tube closer to the rim of the bucket.
And it's done! I'll be filling the area directly in front of the overflow hole with perlite and/or hydroton and the rest with soil, so water can travel from the res and out of the overflow hole.
I want to say thank you to everyone that has participated in this thread and shared their build pics. It made understanding this system a lot easier! I can't wait for my new Blueberries to get bigger and see what they can do in these buckets.