| What is the water source? Is it a natural pond, or is it a retention pond (water source mainly run-off from other areas of the base)?
If it gets run-off water, you'll never be able to keep it clean enough not to kill the fish. Short term addititives (like trout for a tournament) might make it, but the stuff from run-off will kill them rather quickly.
They seem to care enough about it to aerate it, which is good -- but why did they have to in the first place? Simple astetics to look good, or because the water sours if left to its own devices?
I'd really have to investigate the water a lot more before I'd consider anything other than my culls - and even at that, it may be more humane to dispatch them directly rather than poison them with bad water.
But that sure is a mighty fine lookin' pond!
Lee |