Do's and Don'ts
• Always follow the instructions that come with the pumps, lights and filters to ensure they are compatible with the pond being constructed, and with each other.
• It is better to purchase a larger pump/filter than what is required for the pond volume – as fish grow and breed, larger filtration and pumping equipment will cope with excess nutrients and save subsequent upgrading.
• Pumps and filters must be run 24 hours a day, 7 days a week as this will support the beneficial bacteria colony living in the filter and aid in the breakdown of waste and excess nutrients.
• The entire volume of the pond should pass through the filter every 1-2 hours and more often if there are heavy stocks of fish and large fish in the pond.
• A filter may take up to 8 weeks to develop the beneficial bacteria colony. If a UVC (Ultra Violet Clarifier) is used it should not be turned on for the first 3-4 weeks to allow the bacteria to develop.
• When starting a new pond or adding fish, bacteria kick starters or boosters such as Clearpond Biostarter and Clearpond Bacteria can be added to the pond and directly into the filter to start the bacteria colonisation process and to boost the levels of existing bacteria.
• Do not run a UVC without water running through it as the heat produced from the lamp can damage its plastic surrounds and perish O-rings.
• It is best to use the largest diameter hose available and a general rule of thumb is to use the same size hose that matches the outlet on the pump. Friction loss calculators should be used when water is to be pumped over long distances (5 metres plus) or to large heights.
• Ball valves should not be used on pond pumps. When a pump is to be mounted externally it should be placed below the water level so the intake line is always flooded, so if the power ever fails it can restart easily.
• If the pump produces more flow than needed, it is better to install a T-piece and valve in-line to return the excess water to the pond rather than using just a valve to restrict the pumps flow.
• Do not concrete in hoses or electrical cables as access may be required in the future.
• Use an underlay when installing a flexible pond liner to protect it, and remove all sharp sticks and stones etc. from the hole before installing the liner and underlay.