Step 10: Installing Water Circulation System

Piece needed for this step:
- 20ft 1/2" ID vinyl tubing
- (x 4) tee connectors for 1/2" ID tubing
- paper clips (optional)
- water container
- 132 GPH water pump

1. Place the water container under the drainage gutter. Ensure that the side of water container that is parallel to the drainage gutter has enough length so that the water will not wet the floor.
2. Fill the water container with water, and place the water pump into the container.
3. Set up the water circulation system by attaching the tube to the water pump, and all the way to the top left frame of the design.
4. Measure the diagonal length between the rows, then cut the tube and connect them using the tee connector.
5. [Caution: make sure hands are dry] Turn on the power supply while holding the tubes to ensure water outlets are facing the rows of gutter.  This is to test if the water pressure is sufficient. If water cannot be pumped up, get a stronger pump, or watch out for kinks that impede water flow.
6. Using binder clips, restrict water flows to certain outlets that monopolise water circulation.  Through several experiments, you will be able to figure out the best configuration.  Refer to the image attached to see what we came out with.
7. Using string, tie the tubes to the side post of the frame.  Turn on the water pump again to check if everything is working.
<p>awesome work keep it up...keep growing and experimenting!</p>
<p>what size were your grow baskets?</p><p>Great project, I constructed something similar. </p>
How do you keep algae from growing with open top gutters?
Yes, The side to side drain is the most efficent. Also, how about . . . less angle too from left to right and top tray to bottom tray, then as soon as it runs off (into a container at the same level as the bottom tray) the &quot;solar powered&quot; 12v pump can run the water back up. Less angle=easier to pump the water back up. With a rechargeable battery backup (maybe?) it could be continuous.
I seen one similar to this only it was capped at each end and a tube ran from the top right to the one below it, then from that one on the left to the one below it. So it more or less made a serpentine effect. I allowed for more water and nutrients to stay in the trough for a longer period of time. I think the water was controlled by a timer as well.

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