Feeding the right food in the right quantities is very important. Fish should only be given a small amount at a time and not fed more than they can eat in a few minutes. If fish are over fed then they can become unhealthy, waste food lowers the oxygen levels in the water and bacteria grow. This increases the chance of disease and infection.
There are many different foods in store to cater for all fish types. The type of food bought should mimic the fish’s natural diet. Dry flakes float and are ideal for surface feeders; some feeds sink and are better for bottom feeders. There are also live and frozen foods that can be bought in store and give variety to the diet of omnivorous species. One of the great advantages of fish as pets is that slow release food pellets suitable for weekends or longer holidays are available, meaning that they can happily be left to fend for themselves whilst you are away.
The first water put into your tank will probably come from your tap. The water will have tiny amounts of heavy metals, chloramines, and chlorines which sterilize the water for human use. These can however be harmful to fish and the purchase of Tapsafe, Safestart or similar product in store will remove these chemicals. The water should then be partially changed every month. The better the filter system the fewer changes needed.