In article ,
The Cook wrote:

I needed to buy a large quantity of pots for the plants I started in
the greenhouse. So we went to an organic farm and supply. Found the
pots I wanted and a few other items. Then got the tour of the
greenhouse.

They had basil, tomatoes and romaine lettuce planted in boxes filled
with gravel. In the front there was a fish tank with about a dozen
talipia in it. They pump the water from the fish tank through the
gravel in the boxes. The plants take the nutrients and the remaining
water is filtered and pumped back into the fish tank. The fish are
fed organic cat food because they cannot find organic fish food. In a
couple of more months they will pull the fish out to eat, clean the
tank and then put the bunch of minnows into the main tank. It is a
neat system.

Sounds like the kind of set-up I read about in science fiction novels
about large space stations. Fascinating.

Priscilla
--
"You can't welcome someone into a body of Christ and then say only
certain rooms are open." -- dancertm in alt.religion.christian.episcopal