Fluval FX4 External Filter

Building off the high-performance FX platform, the all-new FX4 canister filter bridges the gap between the Fluval 406 and the FX6 canister filters, making it an ideal choice for aquariums up to 250 US Gal (1000 L).

• Multi-stage filter pumps out 700 gallons (2650L) of water per hour
• Smart Pump - advanced microchip technology continuously monitors and optimizes pump performance
• Self-starting - just add water, plug in and Smart Pump will take over. Trapped air auto-evacuated every 12 hours to ensure maximum efficiency
• Easy water changes eliminate need to lift heavy buckets. Simply attach hosing to output (Kit sold separately) and Smart Pump does the rest
• Removable, stackable media baskets eliminate water bypass and hold a total of 1 gallon (3.9 L) of media
• All filter media included - mechanical, chemical and biological
• Aqua-Stop valves with leak-proof Click-Fit attachment system
• Valves positioned at convenient 45-degree angle for easy installation and rotation
• Anti-clog, telescopic strainer ensures continuous water flow
• Multi-Directional Output nozzles can be fully adjusted to create customized water flows
• Utility Valve with drain hose for easy maintenance and flushing of canister
• Rubberized feet help ensure quiet operation
• Compact 16.5' tall design - easily fits under most aquariums
• Made in Italy
• For use in freshwater and saltwater aquariums

The delivery cost of your order depends on the size of the item you are ordering. 

A product that can be delivered by one person, is standard delivery and costs £5.95. This is is free if you spend £60 or more. Delivery will take between 2 - 3  working days for in-stock items. 

A two person delivery is required for furniture, appliances and items over 30kgs. This costs £25, or is free if you spend £2999 or more. Delivery will take between 5 - 10  working days for in-stock items.  For items that are available to order, the delivery timescales will be confirmed in the checkout. 

Deliveries to some remote postcodes are possible, and carry an additional premium delivery charge. This will be charged in checkout, but please contact us if you have any questions. 

We also offer a basic furniture assembly service for most furniture items, the cost of this varies depending on the item requiring assembly and your location. Please contact us for more information.

Click and Collect is available on in-stock items from our Grantham site; NG32 2AB. This will be offered in the checkout for small items, but please contact us if you require click and collect on Furniture. 

Please be aware that we do not offer free returns, so unless there is a fault with your item, then you will be required to cover the cost of returning it to us, or for us to collect the item.

Please be aware of the order cancellation policy attached to furniture products, and in particular, that items configured to your choice attract a 25% restocking fee.  Please also be aware that if it is not possible to gain access to the room of choice, with the product, then the cost of that failed delivery is met by the customer.  If an item in this instance is made to your specification, then the order cancellation policy applies.