ES-Series Castle Dawn Aquatics Stainless Steel External Filters for Nano Aquariums Ultra Quiet Premium Mini Canister Filter

The ES-Series stainless steel external filters are engineered for nano aquariums, desktop aquascapes, shrimp tanks, and small to medium planted tanks. Built with a premium polished metal housing and precision-machined parts, these miniature external filters deliver exceptional mechanical and biological filtration in a compact footprint that fits where standard canisters cannot.

Each model offers ultra-quiet operation, smooth water flow, and specialised inlet and outlet diameters designed for rimless high-clarity aquariums. The ES150, ES300mini, and ES300mini+ feature dual-speed flow modes, making them suitable for soft-flow planted tanks or high-turnover setups.

Whether you run a Betta scape, nano shrimp cube, or a fully planted display tank, the ES-Series delivers professional-level filtration in a beautifully designed, space-saving body.

Key Features and Important Notes:

• What’s Included:
  – Stainless steel filter body
  – Pre-installed motor head
  – Inlet pipe
  – Outlet pipe
  – Stainless steel intake guard
  – Sponge filter pads
  – Tubing connectors and fittings

  Premium Stainless Steel Construction:
  Durable and corrosion-resistant with a minimalist high-end appearance.

  Compact and Space Saving:
  Designed to sit beside nano tanks or inside aquarium cabinets without taking up space.

  Dual-Speed Flow Modes:
  Available on ES150, ES300mini, and ES300mini+ for gentle planted tanks or higher turnover when needed.

  Ultra Quiet Performance:
  Ideal for bedrooms, offices, and desktops.

  Precision Inlet and Outlet Pipes:
  Stable water flow with 6 mm, 10 mm, and 12 mm compatibility, depending on model.

  Important:
  This item must be shipped by sea due to its size and weight, with an expected delivery time of a minimum of 35 days. An express shipping option is available. Please email or message us for pricing.

  Warranty:
  1 Year Warranty (T&Cs apply).

Model Overview and Tank Compatibility:

ES60 Filter:
Power: 1 W
Flow rate: 60 L per hour
Head height: 1.0 m
Inlet diameter: 6 mm
Outlet diameter: 6 mm
Filter media volume: 0.3 L
Recommended Tank Size: 10 litres
Example aquarium sizes:
– 20 × 20 × 20 cm
– 30 × 18 × 24 cm
– Desktop tanks up to 10 L (2.64 US gallons / 2.19 UK gallons)

ES150 Filter:
Power: Low 4 W / High 6 W
Flow rate: 240 to 420 L per hour
Head height: 1.4 m
Inlet diameter: 12 mm
Outlet diameter: 10 mm or 12 mm
Filter media volume: 1.0 L
Recommended Tank Size: 40 litres
Example aquarium sizes:
– 45 × 30 × 30 cm
– 45 × 28 × 30 cm
– 30 × 30 × 30 cm
– 36 × 22 × 26 cm
– 25 × 25 × 25 cm
Approx capacity: 10.56 US gallons / 8.79 UK gallons

ES300 Mini Filter:
Power: Low 4 W / High 6 W
Flow rate: 240 to 420 L per hour
Head height: 1.4 m
Pipe size: 12 mm
Filter media volume: 2.0 L
Recommended Tank Size: 70 litres
Compatible up to 60 × 30 × 36 cm
Approx capacity: 18.49 US gallons / 15.39 UK gallons

ES300 Mini Plus Filter:
Power: Low 4 W / High 6 W
Flow rate: 240 to 420 L per hour
Head height: 1.4 m
Pipe size: 12 mm
Filter media volume: 3.5 L
Recommended Tank Size: 100 litres
Compatible up to 60 × 40 × 40 cm
Approx capacity: 26.41 US gallons / 22.00 UK gallons