(Forced Air)

There are six basic Lake Life Guard Systems (LLG):

1/4HP Rocking Piston Compressor with one diffuser
1/3HP Rocking Piston Compressor with two diffusers
1/4HP Carbon Vane Compressor with one diffuser
3/4HP Carbon Vane Compressor with two diffusers
3/4HP Carbon Vane Compressor with three diffusers
3/4HP Carbon Vane Compressor with four diffusers

The size system that you would need for your pond depends on a number of factors, the surface area of the pond, the depth of the pond, the shape of the pond, it's age and what the pond is used for.

System Components (in top picture)

Carbon Vane Compressor - This compressor operates at low pressure (PSI) and produces a large volume of air (CFM). This type of compressor is designed for continual running and has an average life span of 10 - 15 years. The compressor comes equipped with a pressure relief valve, thermal overload relay valve and assembly (to balance airflow) and filter assembly.

Diffuser - The diffuser is the device that sits on the bottom of the pond, as the air is pumped into the diffuser it is broken down into millions of very fine bubbles, that act as an air lift and move the bottom waters that are void of oxygen to the surface where it picks up oxygen from the atmosphere and takes it back down to the bottom where the oxygen is needed. A diffuser placed at 15 feet of depth is rated at moving 120,000 gallons of water per hour.

Air Line - The best type of air line to use with this aeration system is 1/2 inch ID (internal diameter) black poly tubing, this type of tubing is often used to run water lines. The tubing must be weighted down with bricks so it stays at the bottom, we recommend tying a brick about every 4 -5 feet.

Float Assembly - The float assembly is a net float that is attached to the diffuser by a nylon cord. The purpose of the float assembly is to mark where the diffuser is located and to be able to pull the diffuser up if it needs to be cleaned or if you wish to relocate the diffuser. If you do not like the appearance of the float, it can be tied off about a foot under the surface of the water.

The following picture shows the compressor located in a small shelter near the house and the air line running down to the bottom of the pond. Bubbles coming from the diffuser and creating a circulation pattern in the pond.

Over the years as a pond gets leaves off of trees, grass clippings and decaying weeds and algae going to the bottom, a layer of organic sediment is developed on the bottom of the pond, most of us call this muck. Eutrophication is a term to describe the aging process of a pond, which is the filling in process by both organic and inorganic sediments. The diagram below shows an Eutropic pond, one that has a number of years of muck accumulation and a pond that is aerated with the LLG system and some description of what is happening in each pond.

The LLG Aeration System Benefits

Helps reduce algae growth - by getting and maintaining oxygen at the bottom of the pond, this systems allows the lower orders of the animal kingdom to compete for nutrients that are found in the bottom sediments, reducing the available nutrients for algae growth.

Eliminates Odors - The continual circulation of water past the ponds bottom drives off offensive gases as they are formed.

Improves Water Clarity - If poor water clarity is caused by either organic particles that are in suspension or solution, increasing the dissolved oxygen content of the water will promote oxidation and bacterial digestion of the organic material. If poor water clarity is caused by inorganics such as calcium and iron the higher oxygen content can oxidize these elements and drop them out to the bottom.

Prevents Summer and Winter Kills of fish - Both summer and winter kill of fish is caused by oxygen depletion, generally caused by dying vegetation or a sudden turn over of the pond, the LLG System can maintain a good oxygen supply in the pond year round.

Improves fish growth - By maintaining oxygen at the bottom nutrients are channeled up through the fishes food cycle, increasing the amount of available food for the fish and increasing their growth rate.

Supports Larger Fish Populations - By maintaining a good oxygen level through out the pond, the living space for the fish is increased allowing for larger fish populations.

Breaks down bottom organic sediments (muck) - Aerobic (with oxygen) bacteria break down organic sediment at a much faster rate then Anaerobic (without oxygen) bacteria. By keeping oxygen at the bottom of the pond not only will the aerobic bacteria reduce muck, it also will help keep up with new organics that are getting into the pond, such as leaves, grass clippings and dying weeds and algae.

Safe !! - Since there is no electric wiring or moving parts in the pond, this system represents no hazard to swimmers or fishermen.

For futher information on pricing or what size system would be best for your pond, please give us a call at 1 866-442-0420.

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