Description
Marina A300 Air Pump — Quiet Aquarium Air Pump for Tanks up to 265L
The Marina A300 is the most powerful pump in the range, suitable for aquariums up to 265 litres (70 US gallons). It increases water movement and turbulence for proper oxygenation, helping create a healthier environment for fish and live plants.
Delivering 145 litres of air per hour from a single outlet, it has the pressure to drive long air curtains, deep tanks, multiple air stones via a splitter, or larger sponge and under-gravel filter systems. A sound-dampening housing and rubber feet keep running noise low despite the increased output.
Supplied as a complete kit – no extras to buy.
In the box
- 1 x Marina A300 air pump
- 2m airline tubing
- 1 x air stone
- 1 x non-return valve
Key features
- Highest output in the Marina air pump range
- Sound-dampening design for quiet operation
- Strong pressure for deep tanks and long air curtains
- Non-return valve included to prevent back-siphoning
- Suitable for freshwater, coldwater and marine aquariums
Please note: Position the pump above the waterline or fit the supplied non-return valve to prevent water siphoning back into the unit. Not submersible.
Brand: Marina (Hagen)
Model: A300
Suitable For: Aquariums up to 265L / 70 US Gal
Outlets: Single
Air Output: 145 L/hr
Dimensions (L x W x H): 14.0 x 11.4 x 7.6 cm
Airline Included: 2m
Air Stones Included: 1
Non-Return Valves Included: 1
Aquarium Type: Freshwater, Coldwater, Marine
Shipping Cut Off Times
- In stock orders placed on working weekdays before 2pm will be despatched on the same working weekday.
- In stock orders placed on a Saturday before 10am will be despatched on that Saturday.
- Orders that include pre-order items will be shipped together in total once the pre-order items arrive back in stock using the delivery service chosen at checkout.
None of these cut-offs apply to palletised items, frozen fish food, pond plants or fibreglass ponds.
| SERVICE | SPEND | COST |
| Packet/Courier items | ||
| Royal Mail Next Day (1-2 days) | £0.00-£49.99 | £3.99 |
| DPD Local Next Day (1 day) | £0.00-£49.99 | £6.99 |
| DPD Local Saturday | £0.00-£49.99 | £14.99 |
| DPD Local Sunday | £0.00-£49.99 | £14.99 |
| DPD Local Next Day (1 day)*** | £50 and up | FREE |
| DPD Local Saturday | £50 and up | £9.99 |
| DPD Local Sunday | £50 and up | £9.99 |
| Pallets (booked in) | aquariums / bulky items | |
| Pallets Standard (3-5 days) | - | FREE |
| Pallets Express (1-2 days) | - | £39.99 |
| *EXCLUDED ITEMS | extra delivery fees apply | |
| Fibreglass Ponds (booked in) | ||
| Zone 1 (7-10 days) | - | £79.99 |
| Zone 2 (7-14 days) | - | £149.99 |
| Zone 3 (7-21 days) | - | £249.99 |
| Pond Plants (direct from grower) |
||
| All pond plants (3-10 days) | one-off fee regardless of order size/value | £5.99 |
***Orders with a value between £50 and £80 that are under 2kg in weight may be sent via a Royal Mail Next Day Signed for service.
Further delivery information
All delivery services are working day services and do not include delivery on Saturdays and Sundays or public holidays as standard.
Deliveries are usually Monday to Friday only, although some Royal Mail items may be delivered on weekends as standard if the service is available in your area.
Orders over £50 delivering to non UK mainland locations may be despatched via a Royal Mail (2-3 days) service rather than an express shipping option.
Please see our full delivery information page and terms and conditions for detailed information on shipping policies and zones.




