Table of Contents
| Product type | Main application | Reference price |
|---|---|---|
| Tank 300-500L | Small fish farming | 700,000 - 1,900,000 VND/unit |
| Tank / IBC 1000L new | Medium farming | 2,800,000 - 4,500,000 VND/unit |
| IBC 1000L used (90-95%) | Cost-saving | 1,500,000 - 2,200,000 VND/unit |
| Large round tank 2000-3000L | Large farming | 4,000,000 - 6,800,000 VND/unit |
Updated 13/06/2026, reference price by capacity, VAT excluded. Call 0983 797 186 or Zalo ICD for the most accurate quote.
Key summary:
This is a complete guide for anyone looking for an effective fish-farming solution using plastic tanks.
We cover the types of fish tanks from household to commercial scale (100L, 500L, 1000L and larger), how to choose capacity, species-specific setups, reference pricing, where to buy in Vietnam, and tips on buying used tanks to save cost without sacrificing quality.
Why choose plastic tanks over traditional ponds?
Farming fish in plastic tanks is becoming a top choice for both hobbyists and commercial growers.
The biggest advantages are flexibility and light weight: tanks are easy to move and install in any space such as a rooftop, balcony or garden. In particular, composite or HDPE plastic tanks are highly durable and withstand outdoor sun and rain without becoming brittle like cheap plastics.
Common types of fish-farming plastic tanks
Depending on your space and fish species, choose the right tank shape for the best growth.
Square and rectangular tanks
The most popular line because they optimize space. Rectangular tanks are often used for ornamental fish or designed with an overflow filtration system. Sizes around 200-300L suit small spaces well.
Round tanks
Round tanks usually have a larger capacity, from 500L to 2000L. They keep water circulating evenly with no dead corners, which is ideal for catfish or snakehead because the fish move better.
Special tanks for ornamental fish
For small species, a 7L tank is a neat choice. A transparent tank lets you watch fish from the side, while a black tank is the top choice for guppies or goldfish because the dark color makes fish less skittish and brings out deeper coloration.
Choosing tank capacity by need
Choosing the right capacity is important to avoid overcrowding.
- Small scale (guppies, bettas): 100-200L tanks.
- Medium scale (Koi, large goldfish): 300-500L tanks.
- Commercial scale (catfish, snakehead, tilapia): 1000-2000L tanks. For large farms, 5000L tanks are the most sustainable storage and growing solution.
Setups for specific species
Each species has its own traits and needs a different system setup.
Raising Koi in plastic tanks
Koi need clean water and plenty of oxygen. Koi tanks should be large and deep. Many enthusiasts build a multi-tier tank setup as a waterfall filtration system to keep water clear and oxygen-rich.
Raising catfish and tilapia in plastic tanks
These two species are very hardy. For catfish, focus on controlling feed and changing water on schedule. For tilapia, mind the stocking density so the fish grow evenly. Larger tanks help you harvest more from the same footprint.
Raising snakehead and small ornamental fish
Snakehead jump a lot, so use a tank with a lid or add a net cover. For guppies, add hornwort or water hyacinth to create a natural environment.
Pricing and tips for buying affordably
Fish-tank prices vary widely depending on wall thickness and material.
- 100-200L tanks: contact for a quote.
- 500L tanks: contact for a quote.
- 1000L tanks: contact for a quote depending on type.
For affordable tanks, you can check online marketplaces, but for bulk orders it is better to buy directly from suppliers to cut shipping costs. Another option is buying used tanks at roughly 50-60% of the new price. When buying used, check the base carefully for cracks or heat warping.
Where to buy reliable tanks, available nationwide
If you are wondering where to buy fish-farming tanks reliably in Vietnam, supply is abundant in the major regions:
- Hanoi and the north: dealers concentrate in suburban districts, with same-day delivery available.
- Ho Chi Minh City and the south: a wide range of tanks in white, black and blue.
- The Mekong Delta and central regions: large tanks are stocked year-round to serve coastal aquaculture.
Expert setup and care techniques
For healthy fish, setting up an ornamental tank is more than just filling it with water.
- Treat a new tank: soak a newly bought tank in salt water or banana-leaf water for 2-3 days to remove the plastic smell and manufacturing residues.
- Oxygen system: for outdoor tanks, install an air pump sized to the capacity; a 1000L tank needs a stronger pump than a 100L one.
- Temperature control: plastic absorbs heat quickly. Place the tank under a roof or use shade netting to control light and avoid overheating at midday.
- Cleaning: change water on schedule. Fitting a bottom drain valve on square tanks makes cleaning extremely simple.
Frequently Asked Questions (FAQ)
Which tank color is best for fish?
Black or deep blue is best. A black tank helps fish feel safe, less stressed, and makes their color (especially for ornamental fish) stand out more. White tanks are usually used to isolate sick fish or to monitor health closely.
Are plastic tanks durable for fish farming?
Very durable if you choose virgin HDPE or PP. A good-quality tank withstands sun and rain for 5-10 years. Composite tanks can last more than 15 years.
Should I buy a used fish tank?
Yes, if you want to save cost, but choose a reputable seller. Make sure the tank was not previously used to hold toxic chemicals, as plastic can absorb toxins that kill fish.
How many fish suit a 1-meter tank?
It depends on species and size, but as a rule keep density moderate: for a roughly 1000L tank, around 50-80 commercial fish (catfish, tilapia) lets them grow evenly with good aeration and regular water changes.
