A raised pond is simply a pond that has been raised above ground level. They have become increasingly popular as gardens have become smaller and concerns over child safety have increased. They are frequently included in an aquaponic system where fish and plants are grown together. Such systems require careful control of water levels as […]
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Understandably one of the first things every fish keeper wants to know is, “How many fish should I keep in my tank? (or pond, or aquarium). This is another one of those ‘How long is a piece of string?” type of question, to which there is no simple and straightforward answer. It all depends… Factors […]
Feeding fish is one of the more pleasurable daily tasks. Kids absolutely love to help and fish quickly learn to greet the hands that feed them. Fish appear to cope with an amazing variety of feeding regimes. Many fish keepers just throw in a handful once a day and just make sure that it is […]
Nitrite is a simple chemical made up of two atoms of oxygen combined with one of nitrogen, hence NO2. It can be represented simply by Diagram 1 above. Fish do not directly produce nitrite. Rather it is primarily an end product of the first stage of nitrification that occurs within a biofilter. Fish constantly excrete […]
What is pH? As fish keepers we cannot afford to ignore pH. It has a profound affect on an enormous range of biological and chemical processes. Nitrification, photosynthesis and the toxicity of ammonia and carbon dioxide and heavy metals are just some of the processes affected by pH levels. So what exactly is pH? pH […]
Goldfish aquaponics has much to commend it. The most popular ornamental fish on the planet, probably. Everybody loves goldfish and for many excellent reasons. Of course, goldfish are not really a good choice of fish if you want to produce your own supper. More so, if you are looking to impress dinner party guests. They […]