Water Gardening: test kits, water quality etc, 1 by fredrump

fredrump wrote:
the wall behind my filters has drains and a control valve to regulate the volume going to each 150 gal tank. The pump is built into a cave in the wall and will be completely invisibleonce the areca palms grow up a little. There is poducarpus as a little hedge behind the wall along with another Christmas palm. I expect the floating plants to cover the top and even trial down a bit. To the right of the tree I had a hole built into the wall where I have a bird of paradise planted. Another is at the far end of the flow on the other side.