DrDave said:
The mosquito fish will preclude any offspring from your Koi.
Argghhhh ... awww Joe, say it ain't so. :icon_sad:
When I first built this pond, I was concerned about stagnant water in the bog garden. Not only was the stagnant water unsightly, but I worried that it might be a breeding ground for mosquitoes.
Instead of biting the bullet and fixing this problem by partially draining the pond, and digging under the bog garden to expand the depth (since I had thoughtfully folded the liner instead of trimming it), I purchased two dozen mosquito fish as a quick fix.
The mosquito fish took care of any budding mosquito problems ... but of course did nothing to improve the quality of the stagnant water. I have since gone back and fixed the bog garden the way it should have been. I even planted a brick step to allow my cats easy access to the shallows since they seem to enjoy drinking water from the pond.
The mosquito fish population has since climbed from two dozen to several dozen.
Here's a picture of my waterfall. It's bounded by huge concrete blocks that were part of the original foundation of my log cabin.
This is my bog garden. It's got two water chestnuts. You can see the brick step that my cats use to get water.
Irises and dwarf bamboo are planted on the edge of the pond. I had a 2nd bog garden on the far left of this picture but removed the soil, deepened this area, and moved the water pump there to better improve the pond circulation. This also had the added advantage of giving me extra space in the main body of the pond where I enjoy soaking on warm days.
P.S. Pictured in the foreground is an old metal cooking iron that I found while excavating the pond. This iron would have been used to hold a pot over an old-fashioned cook fire. It's now being used to hold a solar powered lamp.