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.
Below is the text of a recent study that evaluated the use of Vitamin C to de-chlorinate water. They found it much cheaper and more effective than many other chemical solutions. This study was done for municipal water systems, but has direct benefits for Koi ponds as well! Full methodology, as well as recommended dosages are given. There are additional benefits to using Vitamin C as well.
!If you're not havin' FUN, you're not doin' it right