How to Start the Aquarium Hobby in Singapore

Why Aquariums Are Popular in Singapore
Choosing Your First Aquarium Type
Essential Equipment for Beginners
Budgeting Your First Setup
Setting Up Your Tank Step by Step
The Nitrogen Cycle Explained
Choosing Your First Fish
Best Beginner Fish for Singapore
Where to Buy in Singapore
Common Beginner Mistakes to Avoid
Joining the Singapore Aquarium Community
Frequently Asked Questions

Why Aquariums Are Popular in Singapore

If you are looking to start the aquarium hobby in Singapore, you are joining one of the most vibrant fishkeeping communities in Southeast Asia. Singapore’s warm tropical climate, excellent tap water quality, and thriving local fish industry make it one of the best places in the world to keep aquariums. From HDB flats to landed properties, thousands of Singaporeans maintain stunning aquariums that bring nature indoors.

At Gensou, we have been helping beginners take their first steps into the aquarium hobby for over 20 years. Based at 5 Everton Park, we have seen countless newcomers grow into passionate aquascapers and fishkeepers. This comprehensive guide will walk you through everything you need to know to get started.

Choosing Your First Aquarium Type

Before purchasing anything, decide what type of aquarium appeals to you most. Each type has different requirements, costs, and learning curves.

Freshwater Community Tank

The most popular choice for beginners. A freshwater community tank houses a variety of peaceful, colourful fish in a planted or decorated environment. It is affordable, forgiving, and offers endless creative possibilities.

Planted Aquascape

Focuses on aquatic plants arranged in artistic layouts, often inspired by natural landscapes. Fish play a supporting role. This style requires more equipment (CO2 injection, high-quality lighting) but produces breathtaking results.

Betta Tank

A single betta fish in a well-maintained nano tank (5–15 litres) makes an excellent first aquarium. Bettas are hardy, interactive, and available in stunning colour varieties at fish shops throughout Singapore.

Shrimp Tank

Neocaridina shrimp (cherry shrimp) are becoming increasingly popular in Singapore. They are fascinating to watch, breed readily, and thrive in smaller tanks. However, they are sensitive to water quality, so some basic fishkeeping knowledge helps.

Marine (Saltwater) Tank

Spectacular but significantly more expensive and demanding. We strongly recommend starting with freshwater and graduating to marine once you have gained confidence and experience.

Essential Equipment for Beginners

Here is a breakdown of the essential equipment you will need and what each component does:

Equipment	Purpose	Beginner Recommendation
Tank	Houses your aquatic ecosystem	60 cm (roughly 60 litres) — a forgiving size for beginners
Filter	Removes waste and houses beneficial bacteria	Hang-on-back (HOB) or canister filter rated for your tank size
Lighting	Illuminates the tank and supports plant growth	LED light bar; choose a plant-specific light if keeping live plants
Heater	Maintains stable temperature	Optional in Singapore—ambient temperatures (28–31°C) suit most tropical fish
Thermometer	Monitors water temperature	Digital or glass stick-on thermometer
Substrate	Covers the tank floor; supports plants	Aqua soil for planted tanks; fine gravel or sand for fish-only setups
Water conditioner	Removes chlorine and chloramine from tap water	Seachem Prime is the gold standard
Test kit	Monitors ammonia, nitrite, nitrate, pH	API Freshwater Master Test Kit
Fish net	Safely transfers fish	Soft mesh net sized appropriately for your fish
Bucket and siphon	Water changes and gravel vacuuming	Dedicated aquarium-only bucket (never use soap)

Budgeting Your First Setup

One of the most common questions we hear is “how much does it cost to start?” Here is a realistic budget breakdown for Singapore in 2026:

Setup Type	Tank Size	Estimated Total Cost (SGD)
Betta nano tank	10–15 litres	$50–$120
Basic community tank	60 litres	$150–$350
Planted aquascape	60 litres	$300–$600
Mid-range community tank	120 litres	$400–$800
Beginner marine tank	100 litres	$800–$2,000+

These estimates include the tank, equipment, substrate, decorations or hardscape, and initial livestock. Ongoing monthly costs (food, electricity, water conditioner, replacement parts) typically range from $15–$50 depending on tank size.

Setting Up Your Tank Step by Step

Step 1: Choose Your Location

Place the tank on a sturdy, level surface away from direct sunlight and air-conditioning vents. In HDB flats, ensure the floor or furniture can support the weight—a filled 60-litre tank weighs approximately 70 kg. Avoid placing tanks near windows where afternoon sun can cause algae blooms and temperature spikes.

Step 2: Rinse and Prepare

Rinse the tank, substrate, and decorations with plain water—never use soap or detergent. If using aqua soil, do not rinse it; simply add it directly to the tank.

Step 3: Add Substrate and Hardscape

Layer your substrate (3–5 cm deep for planted tanks) and arrange any rocks or driftwood. Singapore’s local fish shops carry an excellent range of dragon stone, seiryu stone, and Malaysian driftwood.

Step 4: Fill With Water

Fill the tank slowly, pouring water onto a plate or plastic bag placed on the substrate to avoid disturbing your layout. Add water conditioner to neutralise chloramine in Singapore’s PUB tap water.

Step 5: Install Equipment

Set up your filter, lighting, and heater (if using one). Turn everything on and ensure the filter is running properly.

Step 6: Cycle the Tank

This is the most critical step—and the one most beginners skip. You must cycle the tank before adding fish. See the section below for details.

The Nitrogen Cycle Explained

The nitrogen cycle is the biological process that makes aquarium life possible. Understanding it is essential for every fishkeeper.

In simple terms: fish produce waste (ammonia), which is toxic. Beneficial bacteria convert ammonia into nitrite (also toxic), and then other bacteria convert nitrite into nitrate (much less toxic). Nitrate is removed through water changes.

How to Cycle Your Tank

Set up the tank with filter running and add a source of ammonia (fish food, pure ammonia solution, or a bacterial starter product)
Test water daily for ammonia and nitrite levels
Over 2–6 weeks, you will see ammonia spike, then nitrite spike, then both drop to zero
Once ammonia and nitrite consistently read zero and nitrates are present, the cycle is complete
Perform a large water change before adding your first fish

In Singapore’s warm climate, cycling typically completes faster than in cooler countries—often within 2–4 weeks. Using a bottled bacteria product like Seachem Stability or API Quick Start can speed up the process further.

Choosing Your First Fish

Resist the temptation to buy fish on impulse. Research each species before purchasing and consider these factors:

Temperament: Will it coexist peacefully with other fish?
Adult size: Many fish sold as juveniles grow significantly larger
Water parameter requirements: Does it suit Singapore’s tap water?
Diet: Can you provide the food it needs?
Activity level: Matches your tank size and layout?

Stocking Tips

Start with just a few fish and add more gradually over several weeks
Follow the rough guideline of 1 cm of adult fish length per litre of water
Add schooling fish in groups of at least 6 to reduce stress
Introduce peaceful species first, then more assertive ones later

Best Beginner Fish for Singapore

Fish	Tank Size (min)	Temperament	Why It’s Great for Beginners
Neon Tetra	40 litres	Peaceful	Hardy, colourful, affordable; thrives in Singapore’s warm water
Betta (Siamese Fighting Fish)	10 litres	Semi-aggressive (keep alone or with peaceful tank mates)	Interactive, stunning, widely available locally
Corydoras Catfish	40 litres	Peaceful	Adorable bottom-dwellers; help clean up leftover food
Guppy	30 litres	Peaceful	Colourful, easy to breed, very hardy
Cherry Barb	40 litres	Peaceful	Beautiful red colouration, undemanding
Otocinclus	40 litres	Peaceful	Excellent algae eater; safe for planted tanks
Harlequin Rasbora	40 litres	Peaceful	Attractive schooling fish; native to Southeast Asia
Neocaridina Shrimp	10 litres	Peaceful	Fascinating behaviour, great for nano tanks

Where to Buy in Singapore

Singapore is blessed with a wide variety of aquarium shops, farms, and online sellers. Here are some popular options:

Physical Shops and Farms

Qian Hu Fish Farm (Jalan Lekar): One of the largest ornamental fish farms in Singapore with a retail section
C328 (Clementi): Well-stocked shop popular with hobbyists for both freshwater and marine
Seaview Aquarium (multiple locations): Reliable chain with a good range of fish and supplies
Y618 Live Seafood and Aquarium (Yishun): Known for competitive pricing
East Ocean Aquatic (Pasir Ris Farmway): Wide selection of aquatic plants and fish

Online Options

Shopee and Lazada: Equipment, supplies, and even livestock from local sellers
Carousell: Second-hand equipment and tanks at significant discounts
Facebook Marketplace and hobbyist groups: Great for pre-owned setups and locally bred fish

Tips for Buying Fish

Observe fish in the shop for several minutes before purchasing—look for active, alert behaviour
Avoid buying fish from tanks with visibly sick or dead fish
Ask the shop how long the fish has been in stock; newly arrived fish may still be stressed
Transport fish home quickly—Singapore’s heat can raise water temperature in bags rapidly

Common Beginner Mistakes to Avoid

Skipping the nitrogen cycle: The number one killer of new fish. Always cycle your tank fully before adding livestock
Overstocking: More fish means more waste, more stress, and more disease. Start conservatively
Overfeeding: Feed sparingly—uneaten food decomposes and pollutes the water
Impulse buying: Research every species before purchasing. That cute pleco could grow to 30 cm
Neglecting water changes: Perform 20–30% water changes weekly without fail
Using soap or chemicals: Never clean aquarium equipment with soap, detergent, or household cleaners
Changing too much water at once: Replacing more than 50% can shock fish with sudden parameter changes
Relying on pet shop advice alone: Some shops prioritise sales over sound advice. Do your own research

Joining the Singapore Aquarium Community

One of the best parts of starting the aquarium hobby in Singapore is the thriving local community. Fellow hobbyists are an invaluable source of knowledge, support, and even free or discounted plants and fish.

AquaticQuotient.com (AQ): Singapore’s longest-running aquarium forum
Facebook groups: Search for “Singapore Aquascaping,” “Planted Tank Singapore,” or species-specific groups
Reddit r/PlantedTank and r/Aquariums: Active international communities with Singaporean members
Local aquascaping competitions: Events and meetups organised by shops and hobbyist groups

Frequently Asked Questions

Do I need a licence to keep fish in Singapore?

No licence is required for keeping ornamental freshwater or marine fish in Singapore for personal enjoyment. However, there are restrictions on certain species. The National Parks Board (NParks) maintains a list of approved species. Always check before purchasing exotic or unusual fish.

Can I keep fish in my HDB flat?

Yes, aquariums are allowed in HDB flats. There are no specific size restrictions, but be mindful of the weight—large tanks should be placed on the ground floor or near load-bearing walls. Ensure your setup does not cause water damage to neighbours below.

How much time does the hobby require each day?

Once established, a basic freshwater tank requires about 5–10 minutes daily for feeding and observation, plus 30–60 minutes weekly for water changes and maintenance. Planted tanks and marine setups may require more time for trimming, dosing, and equipment maintenance.

Is Singapore tap water safe for fish?

Singapore’s PUB tap water is among the cleanest in the world, but it contains chloramine, which is harmful to fish. Always treat tap water with a water conditioner (such as Seachem Prime) before adding it to your tank. The pH of Singapore tap water is typically around 7.0–7.5, which suits most tropical freshwater fish.

Start Your Aquarium Journey With Gensou

Beginning the aquarium hobby is one of the most rewarding decisions you can make. Whether you dream of a lush planted aquascape, a colourful community tank, or a serene betta setup, the journey starts with a single step—and we are here to help you take it.

At Gensou, we have been guiding Singapore’s fishkeeping community for over two decades from our studio at 5 Everton Park. From selecting the right equipment to designing your dream aquarium, our team provides expert advice tailored to your needs and budget.

Ready to dive in? Get in touch with us to discuss your first aquarium, explore our online shop for quality equipment and supplies, or discover our custom aquarium design services for a professionally crafted setup that will be the centrepiece of your home.

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