I got an unexpected mail from James Wojciechowski. I will share it here since his mail is so informative to all koi keepers.
His mail will inspire also others Who are thinking that koi keeping
need expensive gadgets just to raised them.
So without further ado here is his mail.
Im one of Ur subscribers, looking on the inter-net and came across
a thread over a year old, topic was Illigan City Koi Pond.
U had asked if there was any filtration to the pond, the answer is no but the answer is yes it is called Mother Nature.
I have family in Illigan City, Ive viewed that pond before with many
questions but no answers from any one hehe they dont really
know, people that live on that stretch of cannel, take care of it and
watch over very closely, it is a source of in-come for some.
There might be one man that knows all the answers he was the one
that started it and I believe cleaned and re-designed the cannel very generically.
All they did was cleaned the trash and damed 2 sides to make a pool Cleverly damed.
Where does the water come from I believe it is a drainage cannel of
the city, but if U go there it is on the main drag of the city beside
Metro Gaisano and a bridge, the water comes from that direction
down the cannel, REGARDLESS were it comes from not important.
In the beginning this one man put a fish cage in the water and
raised a few tilapia, by his home and was successful, so he came up
with the idea and talked to all his neighbors and at that point they all agreed, some was funded $$ and some was gifts.
This is how I C it to work (Mother Nature, Japan has done this for yrs.) but this one a little different, I feel kind of got lucky in the concept they used.
Picture two ends damed up creating a pool inbetween, water coming in and water going out.
They put up a big wire screen in front to catch all the trash and so
forth were the water comes in and a screen were the water goes out,
does 2 things collects trash (which must be cleaned periodically of
trash) and keeps the fish in place (what do they do in flood waters I dont know).
Koi R doing very well!! Now this is the filtration part Mother Nature, the way I C it to work.
In coming water, is always not clean water but fresh water
compared to the water in the pond and it has a very good flow rate
(water current) I would guess the water in the pond is being
changed completely many times in a hour like maybe 6 to 10 times from the fast movement of water flowing.
The water carries lots of good oxygen, doesnt need to be that clean
as big Koi breeder say needs to be clean not true, the fish will adapt.
They have catfish and tilapia fish which do a good job cleaning the waste and botton of the pool along with the Koi.
Sandy botton from the original cannel, free of trash but not
pollution in water, doesnt matter the heavy flow keeps them healthy highly oxygenated.
it smell around the pool from raw sewer gasses, but nature is
keeping the water clean enough for them to survive and reproduce
(they also sell Koi to the public they arent quality Koi just genaric Koi), thats all it takes.
One other factor involved think about it a natural filter system in
front of the damn, water is much deeper then the pond in which
acts as a sediment chamber, when the water flow increases from a
heavy rain it cleans out the chamber and the pond of pollution, the
pond is kind of shallow and flat bottom, water flows easlly over it
the pond stays clean enough, cool concept of a dam and what it will do for the pond.
The back of the pond is about 3 ft. higher then the original cannel and produces a water fall.
Over all view front of pond is deep water (chamber over flowing of
water) into the pond and then shallow water flat and sandy bottom
(the pond) and then water falling into the original cannel the pond
is being skimmed of pollutants with a high flow rate, which keeps
them alive funny thing is front and back of pond the water is still very dirty.
Ive thought of doing this but i have not the resources. What do U think Giobel Koi. I have a small pond not that big 2ft. x 4ft. x 1ft. deep and I use it to grow out my Koi, 4 at a time (not to crowd
them) the same concept as this pond in Illigan, i change out the
water 2 times a week up to a 1/4 change each time and a over size pump, the water runs through a generic filter 10 time every hr. good flow rate, clean filter 2x a week.
The pond holds about 30 gallons, i use maybe 16 gallons a week in changing out the water, its not much. Koi breeder say U need a big tank bla bla to grow big Koi not true, I talked to U about my koi 1 yr. old she went through this process for 8 months grew to be 14 inches not bad for a pond fish.
i have no mud pond, i think it works, clean, fast moving water. i got the idea from Illigan pond. What do u think, thanks for Ur time and keep up the good works on Ur channel, Jim.
Watch my Video here also to inspire you to join in koi fish keeping hobby. I am poor but it’s not a hindrance for me to keep koi fish