This brief article by Syd Mitchell explains the part that plants play in the Nitrogen Cycle.
Pollution of the aquatic environment by sodium fluoride from some industrial processes has been linked to delayed hatching of fish eggs and reduced growth, which is why, when I clean my teeth, I rinse my mouth into the sink, not my Koi pond.
Manufacturers of products such as these do not like to divulge their trade secrets, so it is difficult to determine the exact make-up without expensive laboratory analysis.
An interesting question has been asked: “If an air pump is turned off for an hour in the evening, does the dissolved oxygen in the pond water disappear immediately the air pump stops?” (The pond has an aerated bottom drain and I assume the air is being turned off so that the Koi can be seen more clearly).
The absolute minimum depth for a koi pond is generally accepted to be at least four feet deep over most of it’s floor area.
There are many different types of ready-made systems on sale, which are designed to simply and easily connect to your pond.
Conventional wisdom says that the turnover rate of a Koi pond should be at least once every hour.
This article is by Syd Mitchell - K.O.I.'s Water Quality Instructor - often nominated for Sainthood by his students... Syd discusses chemicals used to treat a wide variety of problems...
!If you're not havin' FUN, you're not doin' it right