Edit/Update: I AM BACK (for those of you that know me, which is no one, :( womp) and I have decided to do this. I have moved apartments and am now on a nice first floor apartment with a large patio. I am planning things out and going to do some math this week. I am just curious, is there anything like this out there? I know I've seen those hanging gardens where the water trickles down? That is only good enough to grow herbs/small plants etc. Anything else? Thanks for your time everyone. I found this website today, and I have to say that I am glad I did! I've literally spent hours scouring the guides and have this idea in mind. Even through the questions I pose here, I must always keep in mind, "Will it work?" So please keep that question in mind as well. I have a space on my apartment patio that is fairly large (I will get exact measurements at a later time). I will need an elevated garden (with a trough w/reservoir below to capture the water, I live on the second floor and I can't let it run down below). Considering I eat a lot of fresh fruit and vegetables, I'm also thinking of a compost tumbler. First question, can I put almost anything in a compost tumbler that will break down, like fruits, vegetables, grass, leaves, et cetera,? Or does food waste and yard waste need to be separate? I live in Southern California, so my patio gets about 5-6 hours of direct sunlight. I've also been reading that compost bins need some humidity as well. I was thinking of using the reservoir under the garden to put in the compost tumbler from time to time? Would this be effective/necessary? Slugs might not be a problem because I'm on the second floor, but I'm thinking of keeping and Aloe plant out there and use the Aloe spray I saw in a guide. We do have squirrels, but are they attracted to Tomatoes, Cabbage, Basil, et cetera? If so, I will need to build some sort of cage that will keep them out. Is this practical, necessary, and ultimately effective? Thanks for your time ladies and gentlemen. If I do end up going through with this I will record the whole thing and put a guide up!