Unfortunately, I don't have any pictures available from my previous setup, but it was basically just four twelve gallon totes connected with two inch diameter PVC return manifold system that I put together. It was SUCH a pain to work with when I was propagating from seed because of the different phenotypes and just really made it a bigger chore to swap out the nutrient water. So, the new system is this:
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And here is a picture underneath it. I'm using garden hose quick connects to connect each container so that I can easily remove it or elevate it closer to the light. You can also see the main line coming from the reservoir with the brown spaghetti lines to each container for recycled feeding.
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And inside each container has a tube connected to the bulkhead fitting to drain the water from the top. This allows me to keep the containers elevated above the reservoir without the water pouring back. I've also got my air hoses and feed lines tied to the bottom to the tubes, so it feeds from the bottom and drains at the top. This also keeps the volume of water at exactly 2.5 gallons for each container. I'll add some cheese cloth to the top of the drain tubes to act as filters later on.
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I am planning to add three more containers eventually. I just did six this time for the six seeds I germinated. But, now I can quickly disconnect each container and dump out the water real fast to empty out the old solution. Hopefully this makes it easier.