Woohoo, Aggie and Bert you stay in that temp tank until your Fish Mama has your new home ready for you now!
Colleen, I have a large tall heavy duty garbage container that I use for my Skippy type filter/waterfall for the koi pond. The line going from pump on milk crate in that pond USED to go outside of the pond, follow the outside of the waterfall area, to the container. That's the line that pulled away and ran my pond water on the ground. Thank goodness the pump was not on the bottom of the pond! I relocated that line to the inside edge of the waterfall, covered all the line that would be above water level with an insulation sleeve, and buried it about 12" in the ground along the edge of the waterfall. However, that didn't help, it still has water that stays in it if the pump quits or something happens, so going to do things very different this coming summer. Not positive yet what, but for sure going to expand the bog, have probably a stream running on the outside of the bog, and try to keep everything running closer to ground level next winter. If I have a waterfall, it will simply be that ... a waterfall. Not attached to any filtration system. The goldfish pond is crystal clear, with everything running all year long.
Oh, and the temps here say 45 degrees, but I would swear it's more like 60 out there! Sat outside, enjoying the sunshine ... calm before the storm ... after got a bunch of "to-do" things done!