Laura Allen wrote:Hi,
I'm not sure I understand your idea. Are you filling the pond with freshwater, and then wondering what to do with the "greywater" you get after they've gotten it dirty?
Or, are you thinking of filling the pond with greywater from the house?
Dale Hodgins wrote:The ducks would probably appreciate a constructed wetland. I've seen a few large-scale examples of this that become a real refuge for wildlife.
Elizabeth Rabeler wrote:
Hi Laura, we would like to fill the pond with freshwater and then use greywater from our house to keep it full and refreshed. I am thinking of a small pond, nothing too grandiose- just enough for 7 ducks to enjoy.
From Greywater, Green Landscape: Though technically easy and also beautiful and fun, treating greywater
for a backyard pond is not something I recommend. If your goal is to save water, a greywater pond isn’t the right choice. The quality of greywater is unsuitable to fill a pond; it must be filtered by wetland plants first (unless you want a pool of disgusting, stinky greywater). Thirsty wetland plants not only use water, but they also remove nutrients and organic matter from the water, which your garden could benefit from; less greywater flows out of the wetland than in.
A water-wise choice for anyone with both a pond and a landscape is to irrigate with greywater and fill the pond with freshwater (or rainwater), bypassing the need for the water-loving wetland filter. Separately, greywater ponds epitomize the concerns of the regulatory world. Their list of potential hazards includes: drowning risk for children, potential for direct contact with the water, mosquito breeding grounds, and possible overflow to a neighbor’s yard or storm drain. Ponding greywater is prohibited by even the most lenient codes.
Dale Hodgins wrote:I assume this sodium comes from the laundry soap. Some soaps don't contain salt.
Phosphorus can be a problem, causing algae blooms. I want to keep my pond in a constant state of surface bloom, so that I can harvest protein rich plants from the surface. This might be possible with ducks, but would probably work better if they have their own smaller pond, and were fenced out of the feed growing pond.
When I was a kid, we had a poorly managed pond that received barnyard runoff. I had a big throw rope, that I used, to haul massive mats of filamentous algae up to the shore. This stuff was used as a garden mulch.
David Hernick wrote:This thread reminded of something I saw on Penny Livingston, here is a link:
The picture says it is a grey water pond for ducks, but the article does not go into much detail on the pond. ...