On Apr 20, 12:24 am, ~ jan wrote:

Or there are these:http://www.pondbiz.com/home/pb1/page...nderwater.html

Or you can make similar with pvc spray painted black?

The above is really good for ponds that are straight sided,

Unfortunately sides slope so there is little bottom floor not already
filled with pumps, filters , iris blocks or plants

(so DH doesn't have to go diving).

Won't be Dh will be me so am already figuring out a "withdrwal" system
for next time