How To Care For Goldfish
The old saying prevention is better than cure is invariably sound advice and this advice also applies to preventing pet goldfish becoming ill in the first place, rather than try to cure the illness when it has happened. There are a few practices that a competent fish keeper should take in order to minimize the risk of a domestic goldfish becoming ill.
When fish are added into a tank they require extra care to overcome any stress from transportation and being moved into a new home. New fish are more likely to suffer from goldfish diseases because of this stress. To minimize inital stress, let the bag float they are transported in in the tank for approximately 20 to 30 minutes so they get acclimatized to the water temperature and their new environment. Artificial lights should be turned off for a day or so and delay feeding the tank for 24 hours after introducing new fish to your aquarium.
Like all creatures, Goldfish should be fed using a good quality food that fulfills their dietary needs. Top goldfish food can be easily digested, limiting the quantity of waste the goldfish produce and realease into their environment. Poor quality feeds might potentially provide a diet that could be lacking in important nutrition, but they could also lead to too much waste being released into the aquarium, blocking up the gravel and polluting the water.
The aquarium should have a correctly sized filtration system which helps to remove solid and liquid wastes. The basic function of filters is to filter out waste and pollutants to help keep the water clean. All aquariums should have an oxygen supply over and above the oxygen dissolved by natural means at the surface. This is done by using an air-pump in conjunction with tubing and an air stone or similar device that dissipates the pumped air into hundreds of small air bubbles. A quality air pump will achieve this quietly and efficiently. Gravel at the base of the tank should be kept reasonably clean with a gravel syphon as accumulated detritus can reduce water quality. Water needs to be changed every 3 to 4 weeks. Mains water needs to be treated with a proprietary water conditioning product obtainable from local or online pet stores and aquatic centers.