The last tweak involves accessing the motor — which is now the same shade of blue as the internal filter chambers, indicating that it can be removed. Where the old motor was restricted by the power cable that ran up the rear of the filter, the newer design allows for the cable to be pulled from its moorings, freeing everything up.

However upon looking through this from what I have initially found appears that the Fluval U range is "3 Stage filtration" bar the U1. The U2/U3/U4 all using 3 stage filtration however the U1 appears to just use a sponge. Furthermore the filter intake is nothing compared to the Fluval U2 or higher which is extremely disappointing. This Fluval U1 filter only uses the bottom 20% of its intake due to the filters power where as the Fluval U2 and onwards use the entire intake. Internal Filters are an excellent option for small to medium sized aquaria. They are simple and easy to set up, they sit just inside the aquarium itself meaning they can be easily installed into any fish tank, with no troublesome pipes and hoses. They will also work well as a powerhead for water circulation, with the added bonus of the extra filtration. It is worth noting that you should clean your filters impellor every couple of weeks to ensure it is functioning normally and keeping the water moving around the tank. U series underwater filters offer superior water purification, movement and aeration capabilities and have been designed for use in both fresh and saltwater applications.According to the store’s policy, customers have the following responsibilities regarding breakages: In addition to credit scoring, Novuna also takes into account confirmation of your identity, validation of certain application details, existing commitments and information held at the credit reference agencies. Though Novuna is unable to provide you with a main reason for declining your application, it is usually based on one, or a combination of the following: About the smallest filter I think I've experienced (excluding simple box filters of old) is the Aquaclear Mini (now called the Aquaclear 20) I'm currently running on our quarantine tank. I find 3 (not always present but potenially there) noise problems with this filter: first, the impeller and shaft are not as high quality as you'd find in an expensive filter and can get noisy over the years; second, its an HOB, so there's the built-in waterfall noise that you can only escape right after water change time; thirdly, there's the little plastic top cover, which can hum and which of course you could choose not to use or to modify I suppose. Of course, the simple rectangular media box gives maximum flexibility, which is what makes all these ACs be contenders in the first place. The Stingray is plagued with problems and it seems that if I just look at the filter something goes wrong with it. I've had to take it apart and mess around with the motor/impeller about 5 times in the last week as the case doesn't seal properly from brand new and allows sand/plant and other debris to enter the filter by bypassing the sponges.

position horizontally for shallow tanks, larger tanks with low water levels, or to create a decorative waterfall feature

Delivery 

Interesting thread and I'll be interested if more results get posted. The problem of finding high-quality small filters has seemed to hang around, at least from my reading. The complete line, consisting of Fluval U1, U2, U3 and U4 Underwater Filters, includes many practical and versatile features that make them ideal for application in freshwater and marine environments. Once you have agreed to the terms of the finance agreement World of Water Partnership trading as World of Waterwill be notified and you need do nothing more.

Consequential Loss or Damage: The store cannot take responsibility for any consequential loss or damage that arises directly or indirectly from the goods supplied. Reporting Breakages: Any breakages or damages must be reported to the store within 48 hours of receiving the goods. It is important to promptly notify the store to initiate the resolution process. It works great up to the point the bottom of it starts to blog up, at that point its pretty much just a powerhead as it does nothing but push water around bypassing the sponge! So what’s changed? The first ‘tweak’ appears minor, but is actually essential. A tag on the front of the filters, as soon as you extract them from their boxes, shows you how to remove the impeller and give it a clean. If the pictures are confusing, then you can always scan the QR code instead, and watch a video about it. Accessing the impeller for maintenance is a doddle. Fluval U series filters provide the option of setting the flow output in 3 different positions, a key benchmark in underwater filtration. The Adjustable 3-Way Flow Control feature (U2, U3 and U4 models) lets you position the water flow output to meet your specific needs. The Top Output setting provides maximum circulation and oxygenation, the Integrated Spray Bar setting provides a gentle, even flow for planted aquariums, and the Bottom Output setting is for deepwater agitation.If this is true about the Fluval U1 only being a sponge filter can anyone direct me towards a small filter which will have some sort of sponge + Ceramic? I've been very disappointed to find out that the fluval U1 is a sponge only. The Fluval U1 is a compact and versatile internal filter for aquariums up to 55 l. This small aquarium filter is very comfortable in handling. The outflow can be regulated and it can be mounted vertically or horizontally in the aquarium. Thanks to the flexibility in the positioning of the filter, it can be used as a primary filter in smaller aquariums or as a supplementary filter for larger aquariums. Their unique ability to be placed at the bottom of your aquarium makes it ideal for low water levels. The removable central core allows use of chemical or biological media. I like the ceramic media and as I have found it to be very successful find that the Fluval U range is very attractive because of this property. However now that I've just noticed the Fluval U1 is only a sponge it feels like it loses ALL of its great points about it. One natural advantage of internals is the potential for very quiet operation due to complete submersion - its a shame when the designers don't take full advantage of that. APC Next Day Delivery: APC Next Day delivery is available for UK mainland postcodes. It is usually delivered on the next working day after dispatch. However, please note that items being delivered to more remote areas may require additional time for delivery.