5.18 lbs. of highly nutritious, vitamin-enriched sticks quickly soften on the water surface enabling them to be easily digested. Brings out the vibrant reds and yellows of your ornamental fish. TetraPond Floating Koi SticksTetraPond Floating Koi Sticks are a highly digestible nutritional food especially developed to bring out the vibrant reds and yellows for all sizes of goldfish and koi. These sticks are specially made to gradually soften on the surface of the water and are quickly consumed to provide a very high rate of digestibility causing less waste and clear water. They contain a balance of protein, fats, fibers, and other ingredients to meet the specific needs of your goldfish and koi. Offered in a variety of sizes. fish food stick

Misc.:  Premium nutrition for all sizes of goldfish and koi, Brings out the vibrant reds and yellows, Floating soft sticks are easy to digest, Clear water formula, Vitamin enriched for growth, health and metabolism
Company: Tetra 
List Price: $26.49
Amazon Price: $26.00

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3.53 OZ, Floating Fish Food Stick, Comes In A 1 Liter Canister.

Misc.:  An ideal maintenance diet that provides nutrition for energy, longevity, and overall health., Feed in spring, summer and fall, when water temperatures are 50¿F and above.
Company: United Pet Group 
List Price: $5.99
Amazon Price: $2.98

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Discuss – Provide adequate shade by having 60 to 70% of the pond’s surface area covered with floating plants or other types of shade.

A pump is one of the most significant features of an artificial pond. In the absence of a pump, there will not be any moving water, which may result in a marsh. A pump is necessary for circulating and filtering water in a pond. Usually, it is recommended that the pond water should be circulated at least once every two hours. This prevents the accumulation of mosquito larvae over the stagnant water surface. Moreover, it is advisable to determine the quantity of water in a pond and get a pump that pumps at least half that volume every hour. In other words, the gallons per hour rating, or GPH, should be 50% that of the total pond volume.

Pond pumps are electrical devices and require a water-resistant cord. The cord may be concealed between a pond and an outdoor electrical outlet. Pond pumps are installed under water, and normally do not generate any distracting noises. If a pump is supposed to house both fish and waterfalls, then the pump rating (GPH) should be increased.

Discuss – Another way to obtain Koi pond aeration is to have different kinds of under water pond plants such as Anacharis and Hornwort. These plants will grow and spread out very well under water.

Determining an appropriate pump for waterfalls is difficult because these pumps have two ratings, GPH and maximum waterfall height. The height of a waterfall is generally measured from the top of a pump to the top of a waterfall or a stream.

A rule of thumb that is normally applied is that each inch of width of a channel will require an extra 100 GPH. A smaller pump with a large head, and preferably with an adjustable flow control, is required in order to feed water into a statue or fountain.

A multi-purpose pump is the best choice for a person who is not sure which pump to select. Magnet-driven multi-use pumps typically have mechanical pre-filters containing a special sponge mesh for trapping bulky debris. They also have adjustable flow control, built-in fountain with several fountainheads, and diverter valves to split the output stream into multiple devices. They do not require a coolant and consume less electricity. It is recommended to place pond pumps at the opposite end of a waterfall or a fountain in order to allow maximum amount of circulation.

Discuss – Also, digging a fish pond on the lowest ground level in the backyard is not the best idea. This is because it will tend to get flooded when you water your lawn.