Blue Planet Classic Aquarium 20L

Description

Blue Planet Classic Aquarium 20L

An ideal all-in-one starter aquarium featuring LED lighting, built-in filtration and a sleek hooded design, making it the perfect introduction to the world of fishkeeping.

Quick Facts

  • Aquarium Capacity: 20 Litres
  • Dimensions: 37cm × 33.5cm × 25cm
  • Built-in 3-stage filtration system
  • 200L/hour water pump
  • 5W LED lighting
  • Suitable for freshwater, tropical and marine setups*

*Marine use is possible for specialist nano reef or marine systems with additional equipment.

What's Included?

  • 20L Glass Aquarium
  • Matching Hood with Easy Access Lid
  • 5W LED Light
  • Built-in 3-Stage Filter
  • 200L/H Water Pump
  • Adjustable Flow Control
  • Filter Wool
  • Activated Carbon
  • Bio Balls
  • Provision for Optional Aquarium Heater

Is this for you?

✔️ Perfect if:

  • You're buying your first aquarium.
  • You want a complete plug-and-play setup.
  • You keep shrimp, nano fish or a Betta.
  • You enjoy planted nano aquariums.

❌ May not suit if:

  • You want to keep large community fish.
  • You plan on keeping Goldfish.
  • You want multiple medium-sized tropical fish.
  • You intend to keep large cichlids.

Why choose the Blue Planet Classic 20L?

The Blue Planet Classic 20L is one of Australia's most popular beginner aquariums because it includes almost everything needed to get started. The integrated filter keeps water circulating through multiple stages of filtration, while the adjustable flow allows you to tailor the current for different livestock.

Its compact footprint makes it ideal for desktops, apartments, bedrooms or offices without sacrificing viewing area. The energy-efficient LED lighting beautifully showcases fish and shrimp while providing enough light for many beginner-friendly aquatic plants.

Whether you're creating your first tropical aquarium or a beautifully aquascaped shrimp tank, the Blue Planet Classic provides an easy and reliable foundation.

Technical Specifications

  • Capacity: 20 Litres
  • Dimensions: 37 × 33.5 × 25cm
  • Lighting: 5W LED
  • Pump Output: 200L/hour
  • Filtration: 3-Stage Internal Filter
  • Flow: Adjustable
  • Suitable For: Freshwater, Tropical and Marine*

Ideal Livestock

  • Betta Fish
  • Cherry Shrimp
  • Crystal Shrimp
  • Celestial Pearl Danios
  • Emerald Dwarf Rasboras
  • Dwarf Rasboras
  • Small snails
  • Aquatic plants

Things to Know

  • A heater is required for most tropical fish.
  • Always cycle the aquarium before adding livestock.
  • Perform weekly water changes of approximately 20–30%.
  • Clean filter media using aquarium water, not tap water.
  • Avoid overstocking—20 litres is best suited to nano species.
NTA Insight:
At Nano Tanks Australia, we'd much rather see a beautifully planted 20L aquarium with shrimp, a Betta or a small school of nano fish than an overstocked tank. Small aquariums can become stunning display pieces when stocked thoughtfully. If you're starting your fishkeeping journey, this aquarium is an excellent foundation that can grow with your experience.

FAQ

Is this suitable for beginners?

Absolutely. This is one of the easiest aquariums to set up thanks to its integrated filter, LED lighting and complete starter design.

Can I keep tropical fish?

Yes. Simply install an appropriately sized aquarium heater (sold separately or as an optional extra) and cycle the aquarium before adding fish.

Can I keep Goldfish in this aquarium?

No. Goldfish grow too large and produce too much waste for a 20-litre aquarium. This tank is much better suited to shrimp, Bettas and other nano fish.

Can I grow live plants?

Yes. The included LED light is suitable for many beginner-friendly plants such as Anubias, Java Fern, Java Moss, Bucephalandra and Cryptocoryne species.

Does everything I need come in the box?

The aquarium includes the tank, hood, LED light, filter, pump and filter media. If you're keeping tropical fish, you'll also need a suitable heater, water conditioner and beneficial bacteria to cycle the aquarium properly.

Blue Planet Classic Aquarium 20L

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Free pickup in our shop(s)

1 in stock  

$129.95


All prices include GST
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    Description

    Blue Planet Classic Aquarium 20L

    An ideal all-in-one starter aquarium featuring LED lighting, built-in filtration and a sleek hooded design, making it the perfect introduction to the world of fishkeeping.

    Quick Facts

    • Aquarium Capacity: 20 Litres
    • Dimensions: 37cm × 33.5cm × 25cm
    • Built-in 3-stage filtration system
    • 200L/hour water pump
    • 5W LED lighting
    • Suitable for freshwater, tropical and marine setups*

    *Marine use is possible for specialist nano reef or marine systems with additional equipment.

    What's Included?

    • 20L Glass Aquarium
    • Matching Hood with Easy Access Lid
    • 5W LED Light
    • Built-in 3-Stage Filter
    • 200L/H Water Pump
    • Adjustable Flow Control
    • Filter Wool
    • Activated Carbon
    • Bio Balls
    • Provision for Optional Aquarium Heater

    Is this for you?

    ✔️ Perfect if:

    • You're buying your first aquarium.
    • You want a complete plug-and-play setup.
    • You keep shrimp, nano fish or a Betta.
    • You enjoy planted nano aquariums.

    ❌ May not suit if:

    • You want to keep large community fish.
    • You plan on keeping Goldfish.
    • You want multiple medium-sized tropical fish.
    • You intend to keep large cichlids.

    Why choose the Blue Planet Classic 20L?

    The Blue Planet Classic 20L is one of Australia's most popular beginner aquariums because it includes almost everything needed to get started. The integrated filter keeps water circulating through multiple stages of filtration, while the adjustable flow allows you to tailor the current for different livestock.

    Its compact footprint makes it ideal for desktops, apartments, bedrooms or offices without sacrificing viewing area. The energy-efficient LED lighting beautifully showcases fish and shrimp while providing enough light for many beginner-friendly aquatic plants.

    Whether you're creating your first tropical aquarium or a beautifully aquascaped shrimp tank, the Blue Planet Classic provides an easy and reliable foundation.

    Technical Specifications

    • Capacity: 20 Litres
    • Dimensions: 37 × 33.5 × 25cm
    • Lighting: 5W LED
    • Pump Output: 200L/hour
    • Filtration: 3-Stage Internal Filter
    • Flow: Adjustable
    • Suitable For: Freshwater, Tropical and Marine*

    Ideal Livestock

    • Betta Fish
    • Cherry Shrimp
    • Crystal Shrimp
    • Celestial Pearl Danios
    • Emerald Dwarf Rasboras
    • Dwarf Rasboras
    • Small snails
    • Aquatic plants

    Things to Know

    • A heater is required for most tropical fish.
    • Always cycle the aquarium before adding livestock.
    • Perform weekly water changes of approximately 20–30%.
    • Clean filter media using aquarium water, not tap water.
    • Avoid overstocking—20 litres is best suited to nano species.
    NTA Insight:
    At Nano Tanks Australia, we'd much rather see a beautifully planted 20L aquarium with shrimp, a Betta or a small school of nano fish than an overstocked tank. Small aquariums can become stunning display pieces when stocked thoughtfully. If you're starting your fishkeeping journey, this aquarium is an excellent foundation that can grow with your experience.

    FAQ

    Is this suitable for beginners?

    Absolutely. This is one of the easiest aquariums to set up thanks to its integrated filter, LED lighting and complete starter design.

    Can I keep tropical fish?

    Yes. Simply install an appropriately sized aquarium heater (sold separately or as an optional extra) and cycle the aquarium before adding fish.

    Can I keep Goldfish in this aquarium?

    No. Goldfish grow too large and produce too much waste for a 20-litre aquarium. This tank is much better suited to shrimp, Bettas and other nano fish.

    Can I grow live plants?

    Yes. The included LED light is suitable for many beginner-friendly plants such as Anubias, Java Fern, Java Moss, Bucephalandra and Cryptocoryne species.

    Does everything I need come in the box?

    The aquarium includes the tank, hood, LED light, filter, pump and filter media. If you're keeping tropical fish, you'll also need a suitable heater, water conditioner and beneficial bacteria to cycle the aquarium properly.

    Live Arrival & Ordering FAQ

    Why do livestock prices sometimes change?

    Unlike manufactured products, fish and shrimp continue to grow and develop over time. Their value changes as they increase in size, develop colour, or become breeding pairs.

    Our prices are based on the current size, quality and availability of each specimen. While pricing often remains stable for around 3–4 months, it may be updated at any time to reflect these changes.

    We always aim to offer healthy, high-quality livestock at fair and competitive prices.

    Do you offer a live arrival guarantee?

    Yes. All livestock is covered by our Live Arrival Guarantee.

    In the rare event of DOA, please contact us promptly with clear photos of the livestock in the original unopened bag.

    Please review our full DOA and store policies before purchase.

    Can you ship to all states in Australia?

    No. Due to state restrictions, we cannot ship livestock or live plants to WA and TAS.

    What should I check before ordering?

    Before placing an order, make sure:

    • Your tank is fully cycled and stable
    • Your aquarium has enough space for the species
    • Your current livestock are compatible in temperament, size, and requirements
    • Your water parameters, habitat, and temperature suit the species
    • You are not adding too many fish at once
    What should I expect when my fish arrives?

    It is normal for fish, shrimp, or snails to look pale, stressed, or less active after shipping.

    This is temporary. Most livestock will settle and regain colour within a few days.

    How long does it take for fish to settle in?

    Most livestock will take 3–7 days to fully adjust to their new environment.

    Should I feed my fish immediately after arrival?

    No. We recommend waiting 24 hours before feeding to allow them to settle.

    If you already have fish in your tank, feeding them before introducing new arrivals can help reduce stress.

    Why do fish sometimes struggle after being added to a tank?

    In most cases, issues are caused by tank conditions, not shipping.

    • Uncycled or unstable tanks
    • Poor water parameters
    • Overstocking
    • Unsuitable tank mates
    What is Nano Tanks Australia’s main tip for new livestock?

    Most livestock losses happen in immature or unstable tanks, not during shipping.

    If your setup is not fully established, the risk to new arrivals is significantly higher.

    Not sure if this fish is right for your setup?

    If you are unsure whether this species suits your setup, contact us before ordering and we’ll help point you in the right direction.

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