OASE SubFlo Pack 4 D – complete aeration for lakes and large, deep ponds up to 16,000 m²

The OASE SubFlo 4 D pack includes all the equipment needed to aerate a lake or large, deep pond from the bottom, at depths of 2 to 10 m, covering up to 16,000 m², depending on its depth and shape. A shore-mounted base, 4 diffusers placed on the bottom, and the tubing to connect them: you receive a complete, compatible system that is ready to install.

• ✓ Up to 16,000 m²
• ✓ Depth of 2 to 10 m
• ✓ 4 aeration points
• ✓ SAD 200 compressor · 200 L/min
• ✓ Quiet, invisible at the surface

What the pack includes

Choose the pack and save 5% compared with buying the items separately.

How the installation is set up

Illustrative diagram: Tubing L is shown in orange; the lengths of Tubing H running to each diffuser are shown in grey.

1. The base on the shore: install the SubFlo Base 4 D in a dry location near a 230 V outlet. Its SAD 200 compressor delivers up to 200 L of air per minute continuously.
2. From the base to the water's edge: Tubing L. UV-resistant and low-friction, it carries air from the base to the pond's edge, up to a maximum distance of 30 m.
3. From the water's edge to the diffusers: Tubing H. Weighted to sink by itself and stay on the bottom, the roll can be cut into one length per diffuser, tailored to the distance to each one.
4. On the bottom: 4 SubFlo Diffuser D units, supplied empty and weighted on site with gravel or sand. Their ultra-fine bubbles oxygenate the bottom and circulate the entire water column.

30 m or 150 m of weighted tubing?

On a lake covering several hectares, the deepest areas are often far from shore, making the 150 m option the right choice. Not sure? Send us a site plan and we'll calculate the distances.

Why aerate from the bottom?

In summer, a deep body of water separates into layers: warm, oxygenated water at the surface and cold water depleted of oxygen at the bottom. Organic matter decomposes poorly there: silt builds up, gases such as hydrogen sulfide and methane form, and the nutrients released fuel algae growth. With 4 aeration points on the bottom, SubFlo breaks down this stratification across the entire area: oxygen reaches where it is needed, and the bacteria that digest organic matter can work effectively again.

The SubFlo system in video

Installation specifications

Have our experts check your installation

Before ordering, send us the area, maximum depth, and a plan or photo of your body of water at support@foudebassin.com, or call +32 (0)10 86 03 54. We'll check that the pack is suitable and advise you on diffuser placement and the length of tubing required. Aquiflor has been supporting waterbody managers since 1998 and visits sites in Belgium and France to assess your body of water.

For a healthy body of water that lasts

Aeration creates the right conditions; bacteria do the work. Pair SubFlo with Aquipond Bactovase to break down accumulated silt, and check the water's KH: below 7 °dH, add minerals first with Nautex.