Aeration is key to predictable performance from your pond. Your pond
environment receives life-supporting oxygen from the atmosphere at the
surface where the air and water contact each other, as well as from the
photosynthesis of algae and plants below the water surface.These
processes are both affected by weather: available wind energy (wave
action) and sunlight. Weather is unpredictable and that can create
stagnant water and low oxygen levels. When there is no sunlight, there
is no photosynthesis to create oxygen. In stagnant water, there is no
physical energy to help the water and air exchange gases and water
forms well defined layers of different temperatures. Poor environmental
conditions in the pond for fish and other organisms are the result.
Aeration dramatically improves environmental conditions in your pond
and helps keep good water quality predictable. Beneficial bacteria
reduce sludge and nutrients, and there are reduced incidences of
undesirable algae and odors. Winter ice is not allowed to seal the pond
surface and restrict oxygen and gas transfer. Aeration allows your fish
to thrive in an optimal environment and fish populations experience
improved growth rates and vigor.
Robust-Aire diffused air systems provide deep water aeration for ponds
and lakes. Diffused aeration is an effective method of aeration for
ponds with depths greater than 8 feet. By using compressed air injected
directly into the bottom of pond, a continuous flow of water is moved
upward and thousands of gallons of water are mixed with little expended
energy. A Robust-Aire energy efficient compressor injects
air to the bottom of your pond with weighted, SureSink air
line and into the Robust-Aire diffuser assembly. The diffuser breaks up
the air into micro bubbles which rise to the surface. The rising of the
air bubbles creates current which transfers low-oxygen water to the
surface, allows it to contact the atmosphere, and breathe. Temperature
layers are disrupted and fish are able to inhabit the entire water
column. Oxygen levels increase and harmful gases in the pond water are
There is no disruption of the serenity of your pond setting, just the
assurance that it is getting the oxygen that it needs.
Why Choose Robust-Aire?
Why choose the Robust-Aire Aquatic Aeration System? Robust-Aire is the
result of years of coordinated research and development at Kasco
Aeration, an organization dedicated to producing efficient,
high-quality water management equipment for over 40 years.
Kasco Aeration uses superior diffuser materials and design. Robust-Aire
has been tested alongside 6 other leading designs by 4 other
manufacturers. Between 10 and 44% more water flow was induced with the
same volume of air injected into the water column. The system simply
creates more water flow to aerate the pond with the same amount of air
and energy making it the most efficient on the market.
This is the result of an efficient diffuser which allows air to escape
at a very low pressure, to produce smaller bubbles with less friction
loss. The bubbles are approximately 3mm in diameter. The U-shaped
design and placement of the four diffusers enhances the upward flow of
water. The diffuser material is durable and cleanable. While nothing is
maintenance free, seasonal cleaning of the diffusers in order to
maintain efficiency is easy. The hydrophobic material partially repels
growth films and can be cleaned with a rag or gloved hand.
Our diffuser assembly is compact, and comes fully assembled in one UPS
The base is made of recycled HDPE and has sturdy thick walls. The
ergonomic design has hand holds, a large fill port to add gravel, and a
locking, vented fill plug. A sturdy strain relief is provided to hold
the weighted tubing firmly in place with the base unit. This keeps the
strain off the barb fitting where air is delivered into the diffuser
assembly. A check valve is located on the incoming port with a Viton
seal that cracks open at only 1/3 PSI of pressure. A Hastelloy (known
as super-stainless) spring is used internally that will not corrode.
Sure Sink Tubing
Sure Sink self-weighted tubing is a durable PVC
composite available in both 3/8 and 5/8 inch. The hose will not crack
during cold weather and will remain flexible. The 3/8 tubing is used
for lengths below 300 feet and is offered to save on purchase price,
installation effort, as well as shipping & handling costs. Marks
are placed every foot on all weighted tubing to assist with
measurements in the field. Non-weighted tubing is available for direct
burial for installations where a significant distance is between the
compressor location and the water's edge.
The Robust-Aire System comes complete. We included both 3/8
and 5/8 components, including adapters in every box of tubing and in
every diffuser assembly.
Rocking Piston Compressors
The Robust-Aire systems use a rocking piston
compressor for the ability to address deeper water applications, and to
reduce maintenance. Capable of injecting air to 50 feet of depth, these
rugged compressors provide many years of dependable service.
Installation and cabinet options
Robust-Aire is available without a
cabinet and with two options for housing in high quality metal cabinets
with forced ventilation. The Robust-Aire NC model has no cabinet and
may be conveniently housed at your covered and ventilated location. The
standard cabinet option is floor/ground mounted cabinet. The galvanized
steel cabinet has beige colored powder coating, and internal electrical
junctions to pair each compressor with a ventilation fan providing 110
CFM of cooling air across the motor. This cabinet can house 2
compressors, offering systems with up to 6 diffuser stations.
The post mounted cabinet houses one compressor and can provide air
supply for up to 3 diffuser stations. About the size of a large
mailbox, this beige colored, powder coated, aluminum cabinet can be
mounted on a wall or single 4 x 4 wooden post. Over 16 square inches of
ventilation and a single 110 CFM are included in this compact design. A
full length "piano style" hinge allows for full access to internal
components for inspection and maintenance.
All systems with more than one diffuser use an aluminum block manifold
with compact valves to divide air flow and control supply to each
diffuser station. This is important to deliver air equally even though
diffusers may be operating under different pressures due to the length
of tubing and depth of the diffuser station. The compact design allows
for more convenient assembly and maintenance.
Robust-Aire cabinet models are fully assembled at the factory with
compressors, fans, manifolds, installed, and leads ready for tubing to
Expert Design Assistance
Design assistance is available by biologists
and engineers at Kasco Aeration to assure your project goals are
achieved. Provide an internet searchable address or a sketch and
measurements of your pond or lake and the Kasco team will provide
customized planning to design a system that will accommodate your
desired turnover rate.
Superior performance, thoughtful design, and professional assistance
from an industry leader. That is why so many pond owners and water
management professionals are choosing Robust-Aire.