anyhow on with the show...
Step 1: Hardware you'll need
A garden pond pump (the more powerful the pump the higher you can build your garden.)
Some aquarium air tubing (it's cheap enough so just buy a little roll and stash what you don't use.)
Some assorted nuts and bolts
A cheapo washing line
Growing medium (I've used clay balls before but here i'm using perlite)
Some plastic wire mesh ( the amount you need depends on how many levels your garden will be)
Some black plastic rain guttering (it doesn't have to be black but i figure black does a decent job of absorbing heat and so will heat the plants nutrient solution slightly, again how much guttering depends on how high you want your garden)
A couple of U nails to hang your garden from.
A wall that gets plenty of sun. (the size of the wall and power of the pump will determine how high your garden can be)
Step 2: Tools you'll need
Some kind of cutting tool (a hacksaw will work but i'm lazy so will use a dremel with a cutting wheel)
Eye protection ( don't want any of those power tools blowing sharp plastic dust in your eyes)
Step 3: Prepare your wall
We're going to need about 6 inch clearance on each side of the top level of the garden so hammer those U shaped nails into the top of the wall about 6 inches in from either end and make sure they are really secure.
Step 4: The wall part 2
Step 5: Preparing the pump
Step 6: Testing the flow of the pump
Take the end of the aquarium hose that will now have water coming out of it and slowly start to lift it higher and higher up the wall, as you move the hose up the wall you will notice that the pump can only move the water so far up this is where you need to cut off the excess hose, once you have cut off the excess hose water will again be coming out of the end but this time because of the height it will just be drops of water this is the height where you will want to mount your first planter so mark the wall here and move on to the next step.
Step 7: Making the planters
Place one of your newly cut lengths of guttering end down onto the plastic meshing and cut the mesh so it can be glued onto the end of the guttering. Once you've cut up the mesh hot glue a piece onto either end of each length of guttering you've cut
Step 8: Preparing to hang the planters
Hopefully you've got a scrap or two of guttering left (if not you need to go scavenging for something) you need to cut some strips of plastic around an inch long by half an inch wide these need holes drilling through them to match up with the holes you've already drilled in your planters.
Step 9: Hanging the planters
Starting with the top planter (the short one) feed each line through the gap between the strip and the planter and finger tighten the bolts (the bolts are tight enough when you have to use a bit of force to pull the line through to adjust how the planter hangs)
Hang the top planter and push the water pipe through the mesh at one end (i put a small pebble on top of my water line to keep it in place) adjust the angle of the planter so the water flows down the guttering and off the opposite end to the water pipe.
Add the second planter with the extra 6 inches below where the water will exit the planter above it and slope this the opposite way to the first planter. Carry on doing this with all the other planter with the bottom planter directing the water back into the reservoir (bucket)
Step 10: All done
Running: I don't run the system constantly, on rainy days I don't turn the pump on at all (let nature do the work). On sunny days I turn the pump on in the morning and adjust the height and angle of the planters to allow for a nice slow drip of water through the system (planter angle and heights need adjusting to allow for the growth of the plants roots obstructing the flow this doesn't need doing daily just as and when)
have fun and eat fresh
dok out :)
p.s. i totally forgot about doing it this time but it might be an idea to put a lid on the bucket to stop your cat/dog ect drinking it.