extreme newbie needs advice
I picked up an aerogarden that someone was selling for 20 bucks on craigslist, and I just got around to setting it up. From what I gather, it comes with little pods (which I don't have) that you put the seeds in. I wasn't able to figure out what kind of substrate is used in the pods.
The way the aerogarden works is that there are six little holes for the plants, and the pump creates a little trickle of nutrient solution for each hole. Right now, my plants' roots are just sort of dangling. The trickle hits part of the roots, but part of them are just open to the air. Should I use a substrate, or put the roots down into the reservoir of nutrient solution and add an air pump, or is it ok as-is?