>>2703623>Are microgreens worth growing to bring to market at all? I know they used to be a trend or whatever, are they still?The demand is mostly from higher end restaurants. They're worth growing for yourself if you want a low light crop, but they're a little expensive for their yield. If you have a buyer lined up then you can make a lot of money, but if you just start growing a bunch of microgreens and expect to be able to sell them then you end up with a bunch of greens that cost around $0.35 an ounce and have a shelf life of a about a week after you harvest them. If you want to find a buyer then I'd recommend growing a few trays of different microgreens so you can get the hang of it and have samples ready for your buyers.
The tower is made entirely from cheap food storage containers. All of them should be the same size except for one bigger one. That one should be big enough to hold at least a cup of water plus a smaller container. It holds the leachate that drains out so the bigger you make it the less often you will need to drain it. The next container sits inside the largest and serves as drainage for the tower. Drill small holes (~1/8") on the sides and bottoms and fill it with crushed lump charcoal. You'll want to crush it enough that the containers will sit level on top of it. If you ever feel the need to change the charcoal you can mix it into your soil. The rest of the containers in the tower should have larger holes (~1/4") drilled into the bottoms so the worms can move between layers. Fill the containers about halfway with paper and a little bit of something gritty. You can use some of the left over charcoal, sand, or dirt from your plants. Mix/bury your food waste into/under the paper and when you fill up the top container take the bottom container, dump out any compost, fill it halfway with paper and a bit of grit, and place it on the top. If you see any worms then you need more layers. You may want a lid for the top. MS paint-tier pic related