D-D Deltec Internal Protein Skimmer

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D-D Deltec Internal Protein Skimmer
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  • Efficient compact cylinder shape
  • Hollow footplate design 
  • Low power consumption 
  • Whisper quiet operation
  • Toolless maintenance
  • Micro water level adjuster 
  • Interchangeable overflow and regulator pipes
  • Quick and easy pump removal 
  • Hand built in Germany
  • Pump feed/pause button

Deltec have been one of the leading manufacturers in specialist marine aquarium equipment for over 25 years, and are well known for their high quality products. Deltec continue their long history of German hand built high efficiency with their range of internal protein skimmers. They have used their experience to continuously innovate skimmer technology to push the boundaries of performance and efficiency. 

A protein skimmer is a very useful product for the fish heavy marine aquarium. It is a device that brings aquarium water into contact with a large concentration of air bubbles. This process removes organic pollutants before being broken down by bacteria, it has the effect of lowering waste levels. By effectively short-circuiting the normal oxidisation of waste it slows the accumulation of nitrates and phosphates which can have many benefits, such as less frequent water changes.

These internal sump mounted skimmers are neat and compact with many handy features, including toolless disassembly which makes them very easy to use and maintain. They also include a unique safety feature that automatically shuts off the air input if the water level inside the simmer rises, this prevents any accidental flooding of the skimmer cup. 

The unique footplate design gives a better contact time between the air and water without exagerrating the height of the skimmer. It also strongly reduces turbulence and vibrations of the body itself and prevents air escaping into the aquarium.

The Deltec skimmers are operated with a Deltec DCC pump that can be electronically adjusted with a seven stage controller which is included. This allows the water flow and air input to be optimised to the specific requirements of the aquarium. The pump can be increased and decreased depending on the aquarium stocking density to account for the increased waste production. 

  400i 600i 1000i
Aquarium size 100 to 400 L 200 to 600 L 600 to 1000 L
Product Dimensions 20.5 x 12 x 51 cm 22 x 14 x 51 cm 24 x 15.5 x 52 cm
Footprint 20.5 x 12 cm 22 x 14 cm 24 x 15.5 cm
Pump Included Deltec DCC1 24V DC Deltec DCC2 Deltec DCC2
Body Diameter 110 mm 125 mm 140 mm
Neck Diameter 76 mm 76 mm 90 mm
Power Consumption 5 - 12 w 11 w 13 w
Sump depth 15 to 25 cm 15 to 25 cm 15 to 25 cm


Delivery costs for your order will be calculated during the checkout process based on your delivery address and the contents of your basket. You will only pay one delivery charge for your order. Express delivery is FREE for online orders OVER £39 unless any of the points below become a factor.

  • Some large items like aquariums, ponds and pond liners will have an additional charge of £45.00 to help offset the cost of a pallet delivery.
  • Orders containing a physical gift card will have an additional charge of £2.45 to cover the cost of materials and delivery (digital gift cards are a free alternative).
  • Orders to highlands, islands and Northern Ireland may incur an additional delivery charge displayed at checkout this is based on the postal code provided. DPD provides a list of postal codes which have additional surcharges. Some of these post codes may also take 2 working days to arrive, even on express. Pallet deliveries cannot be sent to these post codes.

We only ship to the UK and cannot ship internationally.

We aim to dispatch items that are currently in stock on the same working day if they are ordered before 2.45 pm (excluding Bank Holidays). Orders after 3pm will be dispatched the following working day, unless it fits any of the below criteria:

  • Orders containing live plants will take up to 2 weeks to arrive. We take a week's worth of customer orders and then inform the plant farms of the specific quantities we need to fulfil that week's order to avoid wastage.
  • Pallet orders containing large items like big aquariums will take additional time to arrive as they are sent by a third party. These orders will NOT be dispatched until we have been in touch to arrange a delivery date, this is to ensure someone is available at your address to sign for the delivery. Deliveries will generally be delivered ‘curb side’ within the terms of the agreement we have with our couriers so you will need to make arrangements to transfer larger items into your home yourself. Unfortunately, our drivers are not insured to transfer the aquarium into your home.
  • Physical gift cards and items from the gift shop (such as clothes, towels etc) are sent with 1st Class Royal Mail. Delivery usually takes 1-2 working days, though in rare cases and orders placed closer to public holidays (Christmas, Father’s day, Mother’s day etc.) may be longer.


If you are not 100% satisfied with your purchase online from our website, you can return the product and get a full refund or exchange the product for another one, for up to 21 days from the date you purchased it.

We strongly suggest signing up for an account with fishkeeper.co.uk as this will allow for some additional returns options like return to your local store.

If you checkout as a guest you will need to return the product to Maidenhead Aquatics, PO Box 619, Egham, Surrey, TW20 2BS, please package the order (along with a packing slip or a note including your name, address and order number).

Large pallet items like aquariums are deemed delivered successfully with no damage once the the driver has left the property. If a report of damage is submitted after the driver has left we may be unable to assist with replacements. We recommend refusing a damaged delivery, this is the fastest resolution.

Our full terms and conditions can be found here. When you place an order with us online you are agreeing to these terms and conditions.

For delivery before Christmas, orders must be placed on or before 3pm on Wednesday 20th December. We cannot guarantee delivery of these orders pre-Christmas as we are reliant on our couriers, but will use our best endeavours to get orders placed on this date out to you before Christmas. For full details of our festive delivery and opening times click here

Please note: online orders placed after 3pm on Friday 22nd December will not be dispatched until the New Year. For full details of our festive delivery and opening times click here