@eriinho,
I'm using a standard Bubbleponics bucket raised off the ground just above reservoir height. I cut the sight tube on the side to slightly more than 1 inch below the basket. Put a tee in at the level to create my gravity drain to feed the reservoir. Then I used a $11 pump from Harbor Freight to pump my feed lines.
The solution height in the bucket is a little adjustable by sliding the tee up or down on the sight tube. Flow can be adjusted to do 1 to 4 buckets at least.
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