version d.3 (or; how d’artagnon kicked some trash)
6:18 am in environmental impact, made from scratch (without a kit), Materials and Resources, posts with pitcures!, Projects in Process by DArtagnon Wells
d.3 stands for D’Artagnon’s third system . . . in case people went looking for an “official” set of d.3 plans on the site.
Anyhoo . . .
Looking through the site and through the plans I felt I wanted another option for my containers other than plastic and another growth medium other than those provided. So, taking the basic theory I struck out with my shoelaces untied and the wind in my face.
First the bottles; I used 12 oz soda bottles for a mini herb garden. I found a cool method of slicing the bottoms of the bottles off that was clean and painless. I will post the extended directions in another post. So, bottoms off, edges smoothed then I added my medium.
boylan's birch beer. YUM!
Rockwool doesn’t breakdown and they are a onetime use product. Once the roots have taken over, then what? Where does that go? The pebbles and expanded clay can be reused often, but that seems a lot of maintenance and they come with plastic baskets. A while ago I saw a news segment about a man who went in to the doctor because he thought he might have lung cancer and through some tests found he had inhaled a pea, which started to sprout in his lung.
Creepy, but it gave me a great idea; luffah as a growth medium.
luffah: growth medium and lung analogue.
The early version of my system proved that the luffah stayed moist and allowed oxygen to flow through the root system. Best of all, it breaks down slowly. Not too fast so it supports the root system but it can be thrown into my compost and returned in an earth friendly way. Also, luffah easier to manage if soaked briefly in water.
let's cut this down to size.
perform surgery . . .
roll it up. no too tight.
slide luffah in.
see? perfect.
The reservoir bottle is a salvaged wine bottle sealed with aquarium grade silicon in the neck. I inserted the pump needle directly into the silicon air tube and that tube sits next to a purge valve for easy drainage. I found a simpler check valve at PetSmart and inserted it further down the line for easier access.
black purge tube with valve and clear silicon air tube with check valve.
there's the needle.
here she is.
The bottles are strung together using a bracelet knot. Well, really it’s a bunch of square knots tied over the bottles. Tension keeps things stable.
In the earlier version of the system having the airlift tube on the outside proved messy, so I had the tube running up inside the bottles. After having to do some maintenance and fret over root invasion I returned it to the outside. The white tube is 1/4 inch (outside dimension) pex tube and the smaller is a 1/4 inch (outside dimension) ac tube.
here is the spout.
A side note on the airlift system: If the water level is too low in your reservoir then the air won’t lift enough water. I kept the level about 1.5 inches from the top edge and I chose a long bottle for this specific purpose. Right now it’s a single column system so I only need a single pump.
Next is to transplant my sprouts and actually get food for the system. That’s going to be an exciting learning curve. Eventually I want to see if I can get a piece of bamboo for my airlift tube and be free from the plastic. Here’s hoping.
Let me know what you think and feel free to ask questions. Happy tinkering!
d’
There are lots of alternatives for growing medium, including bio-degradable options. Best to check out local stores.
If the bamboo works -> do tell!
Maybe it is airtight enough? That would be fun!
And I’m not sure about the even thickness of ‘bamboo tube’…
*gg*
Great idea on the luffa! And I love the glass =)
the glass is a wonderful idea! As I was looking through other plans on the site I had thoughts similar to yours on the predominance of plastic. I just watched a talk on artificial estrogens, in the water supply so my mind wasn’t too far away to begin with. Looking forward to the glass-cutting plans so I can try it!
Really like your design with the glass bottles. I am going to try to do the same.
I really don’t like the sound of the airlift system.
Do you think it’s unreasonable to have just a bottle at the top, very slowly dripping down? I could play with the medium so it was some thing with better water retention?
I welcome your thoughts. I really want to make a window farm, but would love to avoid the pump!
Hi there
I am as well thinking of making a window farm… I like your idea with using a Luffa(h) – but have a few questions about it
- doesn’t it start to rot after a little while?
- do you cover it with clay ?
- can you sow the plants directly in it or do you pregrow them beforehand?
just a few questions that I hope you will answer
Instead of bamboo, I’m planning to use copper tubing with the airtight plastic tubing inside. I also used this trick in making a lid sink (like this one: http://earthwormenvy.files.wordpress.com/2009/02/lid-sink.jpg ). They sell this kind of copper tube at hardware stores in roles.