European Tribune - Comments - Growing Vegetables on City Rooftops

Growing Vegetables on City Rooftops | 25 comments (25 topical, editorial, 0 hidden)

Re: Growing Vegetables on City Rooftops (none / 1)

I was planning on setting up a single timer daisy-chained fill system for the water reservoirs on my balcony. With an end-fill off switch built out of a mechanical switch and a float. Like this:

Fills the left most tub first, then the others down the chain, until it is shut off by the switch being activated by the floaty thingi.
I've gotten as far as getting a few containers and starting to make some holes, so we'll see how far this really goes...

by someone (s0me1smail(a)gmail(d)com) on Sat Mar 15th, 2008 at 01:02:54 PM EST
[ Parent ]

Re: Growing Vegetables on City Rooftops (none / 0)

Why don't you just use a mechanical thingy from a toilet in the first reservoir or something?

by Colman (colman at eurotrib.com) on Sat Mar 15th, 2008 at 01:15:08 PM EST
[ Parent ]

Re: Growing Vegetables on City Rooftops (none / 1)

I was planning on using a Hudson valve for that. It's designed especially for this kind of situation and it's relatively cheap.

by Bruce F (greenroofgrowers [at] gmail [dot] com) on Sat Mar 15th, 2008 at 02:16:13 PM EST
[ Parent ]

Re: Growing Vegetables on City Rooftops (none / 0)

I saw that, then forgot.

by Colman (colman at eurotrib.com) on Sat Mar 15th, 2008 at 02:25:14 PM EST
[ Parent ]

Re: Growing Vegetables on City Rooftops (none / 1)

I don't want to join the reservoirs by pipes at the bottom as then a small leak that form might encourage a larger leak, and continously put out water. The last tube with the float should really be linked by the top as well, and have a tiny hole at the bottom. Then the water starts up every now and again, ensuring everything is filled, the final tube fills up, the stop switch is triggered, and the last tube empties slowly, expelling a small amount of liquid. The system is then ready to go for the next fillup.

by someone (s0me1smail(a)gmail(d)com) on Sat Mar 15th, 2008 at 03:22:42 PM EST
[ Parent ]

Re: Growing Vegetables on City Rooftops (none / 0)

Eh? A toilet valve is at the top of the reservoir. Just link them all at the top level.

by Colman (colman at eurotrib.com) on Sat Mar 15th, 2008 at 03:25:41 PM EST
[ Parent ]

Re: Growing Vegetables on City Rooftops (none / 1)

Putting the toilet valve in the last one? Then there is an issue that the containers earlier in the chain may empty first and the refill not be triggered in the last one until too late. This may not be an actual problem, just one I imagine.

by someone (s0me1smail(a)gmail(d)com) on Sat Mar 15th, 2008 at 03:30:45 PM EST
[ Parent ]

Re: Growing Vegetables on City Rooftops (none / 0)

First one, where the water enters the system.

by Colman (colman at eurotrib.com) on Sat Mar 15th, 2008 at 03:32:24 PM EST
[ Parent ]

Growing Vegetables on City Rooftops | 25 comments (25 topical, 0 editorial, 0 hidden)

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