yup. and get a couple of big airstones in there to add oxygen to the pond AND the
filter. Ingrid

"RichToyBox" wrote:

Mike,

What you describe sounds like hydrogen sulfide poisoning. The nasty smell
is probably hydrogen sulfide. Hydrogen sulfide is a gas formed in anaerobic
digestion. The still water in the pipes is not getting oxygen, so the
bacteria that are there are creating the gas. The gas is highly toxic. To
prevent this, the pump should be run continuously. You really need to find
the leak so that you can run the pump. If the pump is going to be cycled,
as you are currently doing, then put tee with valve in the line so that you
can drain the bad water before starting the pump.