Name: Water Garden
Address: 7 Warrior Business Centre, Fitzherbert Road, Farlington, Portsmouth, UK
Telephone: 02392 373735
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Diffused Lake Aeration System

From £5,220.00 inc. VAT

From £4,350.00 exc. VAT

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Diffused Lake Aeration System
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The commercial-grade Diffused Lake Aeration System is ideal for use in deeper fresh and salt water lakes of 2.4m – 15m depth to provide oxygen enrichment and water circulation. The system consists of a robust shore-mounted air compressor and submersible air diffusers.
The self-righting air diffusers are sunk to the base of the lake in the most strategic positions and are linked to Sure-Sink weighted airline (not included), passing back to the dry-mounted air compressor. Air bubbles are forced through the diffusers to dramatically increase water circulation, oxygen content and also help to de-stratify the lake water column, considerably reducing stagnant water and algae growth.
- Package includes Compressor and Diffuser Manifold(s)
- Suitable for fresh water and salt water applications.
- No electrical connections in the water.
- Effective depth range of 2.4 – 15 meters.
- Diffusers can be mounted up to 1 mile away from Compressor.
- Low noise (65dB) and energy efficient 1/4HP and 1/2HP / 230V Compressors.
- Warranties: Lifetime (Diffusers & Cabinet), 3 Years (Compressor Motor & Exhaust Fans), 2 Years (Piston Cups & Cylinders)
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Speak to one of our experts today 02392 373735

Additional Information

Technical Info
Performance Data

Technical Info

System capability based on water depth 2.4 metres or deeper. Shallower water may require the system to be upsized due to reduced efficiency.

These figures should only be used as a cursory guide for system selection, as there are a number of variable factors that should be considered when sizing a diffused aeration system. As well as surface area, factors such as the shape of the lake, the depth of water the diffusers are placed in, general lake depth variation, and the purpose for aerating and expected results are all relevant to selecting the correct system.

It is recommended that your requirements are discussed before purchasing any of the larger multi-compressor aeration systems.

	Lake Surface Area (m2)	Lake Surface Area (Acres)	General Specification
RAE1	4,046	1.0	Small to mid-size ponds and lakes
RAE2	6,070	1.5
RAE3	8,093	2.0
RAE5	16,187	4.0	Mid-size ponds and lakes
RAE6	18,210	4.5	Mid-size ponds and lakes
RAE7	20,234	5.0	Large recreational or industrial lakes
RAE8	24,281	6.0
RAE9	28,328	7.0
RAE10	32,374	8.0
RAE11	36,421	9.0
RAE12	40,468	10.0

	RAE1	RAE2	RAE3	RAE5	RAE6	RAE7	RAE8	RAE9	RAE10	RAE11	RAE12
Number of Diffuser Units	1	2	3	5	6	7	8	9	10	11	12
Number of Compressors	1	1	1	2	2	3	3	3	4	4	4
Compressor Unit HP	1/4	1/2	1/2	1/2	1/2	1/2	1/2	1/2	1/2	1/2	1/2
Combined HP	1/4	1/2	1/2	1	1	1 1/2	1 1/2	1 1/2	2	2	2
Combined Amps	1.25	1.75	1.75	3.5	3.5	5.25	5.25	5.25	7.0	7.0	7.0
Compressor Voltage	220V / 50Hz / 1 Phase
Power Cable Length	1.8m	1.8m	1.8m	1.8m	1.8m	1.8m	1.8m	1.8m	1.8m	1.8m	1.8m
Cabinet Size	Small Cabinet			Medium Cabinet		Large Cabinet
Cabinet Mounting	Ground			Ground		Ground
Cabinet Dimensions mm	L570 x W430 x H340			L660 x W525 x H500		L1070 x W525 x H500
Cabinet Design
Recommended Air Hose	SureSink Weighted Sinking Tubing (Not Supplied)
Air Hose Size	3/8” SureSink for single runs less than 90 metres (300ft), 5/8” SureSink for single runs longer than 90 metres (300ft)
Guarantees	Lifetime (Diffusers & Cabinet), 3 Years (Compressor Motor & Exhaust Fans), 2 Years (Piston Cups & Cylinders)

Related tech articles and downloads

Robust-Aire Diffuser Technical PageDownload

Robust-Aire Compressor Technical PageDownload

Water Garden Case Study - Duck Valley - Robust-AireDownload

Performance Data

The Robust-Aire systems are best suited to lake waters of 8ft (2.4m) depth or greater for optimal efficiency but can be used in shallower waters (at a reduced rate of efficiency). Diffused Aeration is well suited to lakes where surface water disturbance is not tolerable (i.e. using fountain style aeration) and will simply produce zones of surface bubbles with minimal evaporation issues and noise levels.

The Robust-Aire diffused aeration system is designed to be easily assembled and simple to install, with the diffuser manifolds featuring a self-weighted, stainless steel base that will always land upright when dropped into the lake and porous neoprene diffuser lines for maximum longevity. The Robust-Aire has been manufactured to incorporate a strain relief system to keep hoses and connections from being bent or deformed which would otherwise lower the efficiency of the unit. The innovative diffuser manifold is equipped with edge guards to protect from puncturing pond or lake liners.

The air compressor can be floor mounted within its cabinet. The compact, powerful 230V/50Hz Single Phase compressors produces low noise levels of around 65dB.

Water Garden Ltd offer 11 pre-packaged systems to suit virtually any lake management application. The optional Sure-Sink weighted air hose can then be selected depending on the location of the compressor to the submerged diffuser(s). For hose runs over 90 metres, we suggest the use of 5/8" Sure-Sink hose.

The Robust-Aire features market-leading diffused oxygen transfer rates and can be used to aerate feature lakes, fisheries, large ponds, golf course lakes, recreational lakes and attenuation ponds amongst other aquatic applications.

Compressor Performance:

Depth of Diffuser	KPA	Air Flow (Cubic Metres per 24 Hours)
2m	19.4	5,053
3m	26.9	7,580
4m	35.8	11,369
5m	44.8	17,054
6m	62.7	28,821
7m	71.7	37,467
8m	80.6	48,708
9m	89.6	63,320

Reviews

The customer service, together with the products they sell, are second to none and would have no hesitation in recommending them. The product knowledge and advice they provide are quite frankly to the highest standard.

Apsley Technical Services Ltd

5 stars

Great service knowledgable helpful staff and really fast delivery! Would highly recommend!

Philip Wood

I have now replaced the vacuum head of my Pondvac 5 twice and spoken to Oase to check I am using it as expected. I have always had great service from Water Garden.

Ralph Nattress

Great support in planning and helping to calculate flow requirements for our large ponds to produce a cascading effect down several ponds and waterfalls.

Daniel Walton

Excellent pondvac replacement fast delivery. Good service as usual Thank you

Derek Short

This company was recommended to me by a friend and a can’t sing their praises high enough. Absolutely superb advice provided by Jack and excellent customer service from lovely lady in accounts department. Would...

Marie Donnachie

Very knowledgable. Right kit at right price. Swift delivery. Excellent customer service. Highly recommended.

Frank Bryant

I've given this a 5 star review, from the first phone call through to ordering the whole process was seamless, the staff on the end of the phone or live chat were extremely knowledgeable all knowing the info there giving...

David Holwell

Had the exact item I needed and received it the very next day. Couldn't be happier.

Ben Gulliver

Excellent small local company, always a pleasure to deal with them. I've bought four different pumps there in the past couple of years, two recent ones being floating fountains to improve aeration in the hot weather and...

Neil Russell