Where to start. We moved into a new home about a year ago with a 135,000 gallon pond as best I can calculate.
1/8 acre 5,500sqft 4-5 Ave depth
100ft x 60ft oval
Well / rain fed on a slope.
2 airators, the membrane pump type
Not to much natural shade until late in the day.
The prior owner said it was about 8ft at the center, haven’t tested that out yet.
There are a mix of fish in the pond.
Koi, about 12-20? About 18-24in long, the water is murky and I never see them all when we feed.
A few Bass, only caught one big female and a smaller male.
Quite a few Bream, small and large.
A few “Placo” not sure..
And at least one decent Katfish.
When we bought the house there was a leak in the liner which we located and had repaired. At the same time as the repair they added an active skimmer to a waterfall on the opposite side which runs 24/7 filters most of the floating stuff into a basket with a sponge type filter we clean weekly. Also added some plants which the Koi have mostly eaten/destroyed lol…
Our water is pretty murkey, seems to be a mix of light algae and the fish stirring up the bottom with maybe some rain run off. We get some stringy algae around the edges but not to much.
Bought a test kit and last read was:
We add extra water via the well which is only to top off up to the skimmer. There is an overflow weir that takes the heavy rain flow away down the slope so we do have a way to change out water. That said the prior owner ran the well nearly continuously to keep up with the leak, which we fixed. We haven’t run the pump to “change over” water yet.
We feed the Koi and other fish as best as we can make out as appropriate per the water temp. http://www.hikariusa.com/wp/feeding-coldwater-koi-basics/
We haven’t yet experienced any major algae blooms or seen any signs of a fish dying. One Koi was possibly killed by a Great Herron but the Koi was huge, about 20in long and looks to have probably jumped out of the pond about 2ft dying of air loss. Can’t really say if it was the birds fault.
The only odd thing was we had about 7-10 regular turtles, none snapping, living in the pond when we moved in. There was a time over the summer when over a period of 3 weeks, all of the resident turtles died unexpectedly, about July. We found them floating on the surface dead. There were no dead fish or other things out of place. It wasn’t particularly hot. The local Koi association said there was what could have possibly been blue algae? We never tested the water. No turtles have returned since.
Long story, long I guess is we’re really would like to ensure we’re taking care of the pond and if possible improving the viewing quality of the water to see more of the Koi. We can’t really see down past 4-6 inches or so.
Some posts here recommend Bogs, others tens of thousands of dollars worth of filters.
We have the space to do set the pond up right.
We’re pretty cost conscious, hard working and like projects. Also would prefer to keep the Koi and other fish as our kids and their friends enjoy catching/releasing.
Thanks in advance and look forward to the groups advice.