Pond Fish Problems
| It is always depressing to realise that there are problems when undertaking any enterprise. With pond fish there is the potential for many, but the water gardener who takes sensible precautions and manages the garden pond well will rarely encounter any. Here are described all those that may arise, together with a guide to their recognition and possible solution. In the context of the average well-balanced garden pond, problems are unlikely to arise once everything has settled down.
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 Sensible precautions ensure a healthy fish population.
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Most pest and disease problems arrive with freshly introduced plants and fish, so if sensible quarantine precautions are taken much of the risk of trouble that might arise, certainly in the form of a pest or disease, is removed. It is true that visiting birds and animals can introduce some problems, but for the most part a well-established and balanced garden pond is a healthy and sterile environment that is mostly insulated from harmful external influences.
Water quality is one of the main influencing factors when it comes to pond fish problems, whether they are associated with the chemical composition of the pond water, pests or diseases, it is the quality of the water that will have a major influence. In a well-balanced pond with sufficient aquatic plants of all kinds and a modest stock of fish, the water quality is almost certain to be good. Problems start to occur when additional fishes are added and the balance cannot be properly sustained by natural means. It is then important to introduce water filtration. If properly applied this creates very satisfactory conditions that do not cause the fish any stress. It is stress that causes the immune system to go into decline. In turn this encourages the development of latent pathogens.
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 Few problems occur in a well-balanced garden pond.
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These are often present but not active in otherwise apparently healthy fishes. When fish suffer from any malady, however minor, it is important to take immediate remedial action. Water is an efficient carrier of pests and infections, and the sooner the source of any potential problem is removed and treated, the less likelihood there is of a disaster unfolding.
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| A treatment or hospital tank is a vital piece of equipment for the serious water gardener. A place where troubled fishes can be treated effectively in isolation. Such a tank is also a very useful unit in which to quarantine fish and treat new plants before introduction to the pond. Modern science has given the fish-keeper a range of ready-to-use products for controlling many pests and diseases.
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 Water quality is one of the main influencing factors.
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 A treatment or hospital tank is a useful stand-by.
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It is possible to use straight chemicals, for many are available from the pharmacist, but these are for the very knowledgeable. Apart from being potentially toxic, they are often difficult to administer in the small quantities necessary for a garden pond. For most water gardeners the best advice is to use only prepared medications and keep strictly to the manufacturer’s instructions.
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