The EcoPlus Eco Air 4 is a four-outlet air pump rated at 6.5 watts and 253 GPH of airflow. It is an aeration pump for pushing air into water — used to oxygenate hydroponic reservoirs, deep-water-culture (DWC) buckets, cloners, and nutrient tanks — and it runs without oil. This page gives the specifications carried by the pump’s stocking retailers and is honest about the figures those listings do not agree on. It is an air pump that oxygenates water, not a submersible water pump that moves it, and not a nutrient additive.
What it is
The Eco Air 4 is a diaphragm-style aquarium/hydroponic air pump in EcoPlus’s Eco Air line. It sits outside the reservoir and feeds air down through tubing to air stones, driving dissolved oxygen into the nutrient solution so roots stay aerated. Retailers describe it as a dual-chamber oscillating pump built for high output and stable pressure, with a double-damping noise-reduction system for quieter operation and a heavy-duty, water-resistant housing. Because it operates without oil, there is no oil to change and no risk of oil carrying over into the reservoir.
Specifications
| Type | Air pump (aeration), diaphragm-style |
|---|---|
| Outlets | 4 (four outlet) |
| Power consumption | 6.5 W |
| Air flow rate | 253 GPH |
| Operation | Oil-free |
| Design | Dual-chamber oscillating; double-damping noise reduction |
| Dimensions / weight | Held — see honest-fit (retailer listings disagree) |
| PSI | Held — not published on the sources read |
Why choose it
- Oil-free, low-maintenance running. The pump runs without oil, so there are no oil changes and no chance of oil contaminating the nutrient solution — practical for continuous, unattended systems.
- Four outlets from one unit. With four outlets, a single pump can feed several air stones across separate buckets or reservoirs without a manifold.
- Quieter, stable output. The dual-chamber oscillating design is paired with a double-damping noise-reduction system, which matters in a tent or grow room where the pump runs around the clock.
- Modest power draw. At 6.5 W it can stay powered continuously without meaningfully affecting a grow’s running cost.
Best uses
- Deep-water-culture (DWC) reservoirs. DWC roots sit in the nutrient solution and depend on a constant supply of dissolved oxygen; an air pump plus air stone is the standard way to deliver it. The 253 GPH output suits small-to-mid reservoirs and bucket banks.
- Cloners and propagation. Steady aeration keeps cuttings and propagation water oxygenated; the four outlets let one pump serve multiple cloner sites.
- Nutrient-tank oxygenation. Keeping a reservoir aerated helps slow the anaerobic, low-oxygen conditions that stress roots and encourage root rot between changes.
- Multi-bucket setups. The four outlets make it a fit for a row of separate containers fed from one pump rather than several single-outlet units.
Compatibility
The Eco Air 4 connects to standard air stones and airline tubing through its four barbed outlets, the same as any hobby/commercial air pump. It is used with the air stones and diffusers a grower already runs in a reservoir. It is an air pump: it does not circulate or lift water, so it does not replace a submersible or inline water pump — pair it with one of those for water movement, and use the Eco Air 4 for oxygenation. For very large multi-outlet manifolds, a higher-output commercial air pump is the better base unit (see the comparison below).
Comparison
| Attribute | EcoPlus Eco Air 4 | Larger commercial / linear air pumps |
|---|---|---|
| Air flow | 253 GPH | Substantially higher airflow (see each unit’s listing) |
| Outlets | 4 | More outlets, or a single high-volume outlet feeding a manifold |
| Power | 6.5 W | Higher draw for higher output |
| Best for | Small-to-mid reservoirs, cloners, multi-bucket DWC | Large commercial banks, big manifolds |
Within EcoPlus’s own pumps, the EcoPlus Pro Linear Air Pump is the higher-output sibling for larger aeration loads.
Where it fits
For more reservoir plumbing and circulation hardware, browse the water & air pumps category. Related pumps in the same water-hardware line include:
- EcoPlus Pro Linear Air Pump — a higher-output air pump for larger systems.
- EcoPlus Eco Bottom Draw Submersible Pump — a small submersible water pump for circulation.
- EcoPlus Eco Fixed Flow Submersible / Inline Pump — a compact water pump for fountains and small feeds.
- Little Giant 5-MSP Submersible Pump — a higher-flow submersible water pump.
- DAB Esybox Electronic Water Pressure System — a pressurized water-delivery system.
- DAB DOC68 NPT Adapter Base — a fitting for DAB pump systems.
Frequently asked questions
How much air does it move? 253 GPH across four outlets.
Does it use oil? No — it is an oil-free pump.
Is it a water pump? No. It is an air pump for aeration; it does not move water. Use a submersible or inline pump for water circulation.
How much power does it draw? 6.5 W.
Who this is for — and who should skip it
Suited: growers who need reliable, oil-free aeration for DWC buckets, cloners, or nutrient reservoirs and want four outlets from one low-draw unit.
Not for / its limits: it is an air pump, so it will not circulate, lift, or pressurize water — a DWC or drip system still needs a separate water pump. Its 253 GPH output is aimed at small-to-mid setups; very large commercial banks or big multi-outlet manifolds want a higher-output commercial pump.
HELD (not stated because not sourced this session): the maker’s own spec sheet — both the WAF-immune fetch and an anonymous fetch of the EcoPlus/Hawthorne maker page returned HTTP 403, so no figure here is a code-verified manufacturer spec; every spec above traces to a carrying retailer. The exact dimensions and weight are HELD because retailer listings disagree (roughly 8.6–8.9 in length, 4.3–4.4 in height; 2.7–3.1 lb). The PSI rating, the specific “4 to 22 outlet” air-divider range (seen only on listings outside the trusted set), the warranty term (held per policy), the shelf price (the storefront price field is the source of truth at deploy), and the interpretation of the “16/CS” distributor case-pack code are all HELD.
Need dependable aeration for your reservoirs? Add to cart, or talk to a grower about sizing an air pump to your system.
Sources
- Hydrobuilder — EcoPlus Eco Air 4 Pump 6.5 Watt Four Outlet, 253 GPH (HTTP 200, carrying retailer, retrieved 2026-07-08; PRIMARY spec source used here): 6.5 W; 253 GPH; 4 outlets; oil-free operation (“convenient to operate without oil”): https://hydrobuilder.com/products/ecoplus-eco-air-4-pump-6-5-watt-four-outlet-253-gph
- Perris Hydroponics — EcoPlus EcoAir 4 Adjustable Air Pump, 253 GPH (HTTP 200, carrying retailer, retrieved 2026-07-08): 6.5 W; 253 GPH; four outlets; dual-chamber oscillating pump for high output and stable pressure; double-damping noise-reduction system; heavy-duty water-resistant housing: https://perrishydroponics.com/products/ecoplus-adjustable-air-pump-253-gph
- EcoPlus / Hawthorne Gardening Company — Eco Air Pumps maker page (HTTP 403 via both the WAF-immune host and anonymous fetch on 2026-07-08; UNREACHABLE — no manufacturer-spec value could be code-verified, so all specs above are grounded to carrying retailers instead): https://www.hawthornegc.com/shop/product/ecoplus-eco-air-pumps
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