Turn common plastic soda bottles into a self watering microgreen grower. Fill with water or nutrient solution, turn it upside down in a bowl, add clay pebbles (leca) and seeds, set in dark until it germinates and then give it some light. After the plants are a few inches tall, you can harvest the microgreens. If you want to try and grow them out to the baby green stage, you can refill the bottle by carefully lifting it out, refilling it. Put your thumb over the opening of the bottle, invert it and put it back in the adapter. Refer to my YouTube channel for details. Approx 4.5" diameter. Check the bowl or dish you want to use. A glass baking dish works great. Made out of PLA, plant based. *Hand wash warm soapy water only, not dishwasher safe. *Do not leave exposed to sunlight when not in use.