I've had my grocer order me a case of watercress at a time (10 big bunches).

I've grown it in the veggie part of my filter by sticking the stems through
light grid (looks like baby ice cube trays with no bottoms, found at hardware
centres). It grew like crazy. The experiment ended when the labradors attempted
to walk on water.
Right now it grows across out low wide waterfall.
The roots just spread out and it is very easy to rip it up and feed it to the
fish. They will eat whatever I throw in overnight.
It winters over, frozen solid and has even survived a week of 100+F temps when
we had to turn the waterfall off.
Amazing stuff :-)


k30a
and the watergardening labradors
http://www.geocities.com/watergarden...ors/index.html