Current Accurate Useful
By Spike Cover
This is a good explanation and drawing of how to build a constant flow regulator for doing constant water changes on your pond.
Many folks have struck on the idea of using a slow trickle of fresh water into their ponds paired with a standpipe-type overflow to help rid the pond water of nitrates. The simplest and cheapest way to accomplish this (presuming there is a suitable overflow) is to use off-the-shelf drip irrigation components to regulate the inflow of water. However, knowing that these components are less than precise and prone to drift (varying the flow rate) and other forms of failure, I decided I could design a low-flow device that would be pressure compensated, could be precisely set and likely more reliable than store bought drip irrigation parts. (In a former life, I was a mechanical engineer with a background in hydraulics.)
While this article by Taro Kodama is a bit commercial in terms of recommending their own products, it does have very good info, and is worth the read! I did not include, but they do sell, a complete Q tank kit and a complete accessory kit – and both contain a good group of items.
Updated April 2018
By: Syd Mitchell
This article delves into the differences and similarities between homes for our nitrifying bugs, and how they work. The article ends with a quick primer on Anoxic Filtration – there is a full ebook on the subject if you are interested: http://koiorganisationinternational.org/product/anoxic-filtration-and-ho...
Author: Diana Walstad. Made available to K.O.I. by the author's written permission.
A look at "MB," a common, highly contagious, and incurable bacterial fish disease, and some steps that can be taken to prevent its outbreak.
Whilst “filtration” on koi ponds has become a somewhat controversial subject full of emotion, there are basic principles that apply to all variations hobbyists may encounter.
So much research has been done on the Koi fish itself, with regards to nutrition, disease and medication. What about the Koi keeper? How about a little research being done on these specimens.
“The greatest effect of water circulation is that it prevents thermal and chemical stratification.” (Boyd)
Water circulation within the pond plays a vital part in successful Koi keeping.
In our wonderful hobby – Koi keeping – we all tend to fall into a deadly trap, the trap of over stocking our ponds. Koi keepers often keep every Koi they buy for as long as possible. Often the quality deteriorates but we still keep them and they keep on growing.
!If you're not havin' FUN, you're not doin' it right