Having a pH of less than 7 (neutral).
Having a pH greater than 7 (neutral).
To expose the pond water to air to increase the oxygen levels.
Waterfalls, fountains and aerator nozzles all contribute to increasing
the water oxygen level.
Lower forms of plant life that has been in existence for millions of
years. Thriving in sunlight, nutrient rich water and warmth.
A substance used to kill or inhibit the growth of algae. However, must
be fish, plant and filter safe
The alkali concentration or alkaline quality of an alkali-containing
livestock. Should always be kept at zero. Produced from fish waste, dead
plant matter, dead livestock and uneaten food.
Microscopic organisms that reproduce rapidly under the right
conditions. Can be either detrimental or beneficial to ponds.
Affecting life or living organisms.
Filters that, by harbouring beneficial bacteria, convert harmful
nitrites into useful nitrates while cleaning the water of algae and
Medium that provides surface area and good adhesion of nitrifying
bacteria with a bio-filter.
Blanket Weed or String Algae:
Fibrous green strands of 'cotton wool' like algae. Grows rapidly by
utilising excess nutrients in ponds.
pavers, stone etc used to finish the top of water features and
The duty cycle of a pump is the
relationship between the running time and the stationary (off) time,
based on one hour.
For example; pond pumps are rated 24/7
(run 24 hours a day 7 days a week) which is a 100% duty cycle.
Other pumps, such as bilge pumps or sump
pumps may have a duty cycle of only 10% which means they can run for
6 minutes in one hour with 54 minutes cooling time. Exceeding the
duty cycle limitations will reduce the operating life of the pump.
The difference in the duty cycle is a
reflection of the performance, a sump pump produces a high volume
with a high pumping head, a pond pump produces a large volume flow
with low head, therefore requiring much less energy, it has less
heat and can be cooled by the pond water allowing 100% duty cycle.
are units designed to clean and clear water. There are two main types
used for ponds, mechanical and biological. The filter can be located
either in-pond or external, out of pond filters can be either gravity or
pressure types, with pressure being the most common.
lumps or masses. See Interpet Green Away
Water treatment and
The pump inlet is located below water level so that the water flows
freely into the inlet.
volume of water to be circulated throughout the pond system, measured in
litres per hour (lph).
A decorative structure, that issues a flow or jet of water.
that creates jet or steam of water. Available in a variety of shapes and
amount of head (pressure) required to move the water through the hoses
and fittings. This must be allowed for when selecting a suitable pump
for the pond.
See our chart
plants lacking chlorophyll, leaves, true stems and roots that reproduce
A column of water ejected into the air from a pump.
Green Water Algae:
called 'Pea Soup' - Caused by excess algae this is a dramatic imbalance
of the pond's micro-organisms.
inlet is located below water level so that the water flows freely into
High-density polyethylene, used in many items including
A measure of pumping pressure. 10 metres head = 1 Bar at 20°C
The maximum height that the pump can lift water up vertically, ie the
point at which water ceases to flow.
rotating device (normally on a shaft) inside a pump used to force water
through the pump. In most cases a magnet is also attached
12V and 24V, usually alternating current (AC)
solar pumps are normally direct current (DC)
Aquatic plants that live in the shallow areas around the edge of a pond.
NO3. Large macronutrient used by plants for food. Levels over
50mg per litre will encourage algae.
NO2. Lethal to fish and other pond life. Nitrate poisoning
causes fish to gasp at water surface.
attachment such as a
fountain head that creates various water patterns and assists in
aeration of the pond water.
An individual form of life, such as a plant, animal, bacterium, protist,
or fungus; a body made up of organs, organelles, or other parts that
work together to carry on the various processes of life.
Water treatment and Filters
To produce oxygen in water.
Plants that emit oxygen into the pond water during photosynthesis.
An animal or plant that lives in or on another and from which it obtains
of how acid or alkaline your pond water is, with 7 being neutral. The
acceptable range for pond water is between 6.5 and 8.5 with 7.5 being
the ideal for the health of your livestock.
process in green plants and certain other organisms where carbohydrates
are synthesized from carbon dioxide and water using light as an energy
source. Most forms of photosynthesis release oxygen as a by-product.
material used in freeform pond construction to waterproof the pond
A device that sucks sludge and debris from the bottom of a pond.
Pre-formed ponds constructed to look as natural as possible that come in
a range of varying shapes and sizes.
Preformed pond units that come in varying shapes and sizes. We recommend
Projecting Sheet Spillway:
Spillway that projects a sheet of water into the pond as a decorative
effect (see sheer descent spillway).
mechanical device that generates water pressure so the pond water can be
circulated for filtration and decorative uses. Pumps are made in varying
styles such as, filter, waterfall / stream, feature,
A device that restricts the size of solids from entering a submersible
box used to create an even sheet of water that runs down the wall.
Sheer Descent Spillway:
as projecting sheet. Manifold box used to create a 'solid sheet
of water that projects out from the wall.
that removes leaves and other debris from the pond surface.
Organic matter and waste product build up at the bottom of a pond.
Water treatment and
Sludge vacuum cleaners
A device that produces electricity from sunlight by photo-voltaic
Reinforced hose designed to maintain its shape and minimise the friction
loss that degrades pond pump performance, especially in bends.
A nozzle that produces a solid stream of water.
test strips that measure the most important levels of water quality,
acidity, hardness, nitrites and nitrates.
uses ultra-violet light from a special lamp to kill algae and other
microscopic organisms as water passes through it, thus 'sterilising' the
A high density fabric used under pond liner to protect it from puncture.
Sometimes called geotextile. Also assists with installation of
amount of water contained in a pond or water feature, usually measured
in litres. Multiply length x width x depth in metres and multiply the
result by 1000 to give the volume in litres.
Attractive aquatic flowering plants.
used to maintain optimum water quality, specifically formulated to be
suitable for pond aquatic life.