Black Diamond 4ft Polished Tank – 1220 x 450 x 450mm (10mm Base, 6mm Sides)
Black Diamond 4ft Polished Tank – 1220 x 450 x 450mm (10mm Base, 6mm Sides)
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- Made in South Africa
- Secure card payment
- Collect in store at our 3 Gauteng stores
- Questions? Send us a message
A premium display tank for serious hobbyists – deep, long, and built for impact.
🔍 Key Features
Size: 1220mm (L) x 450mm (W) x 450mm (H)
Glass Thickness: 10mm polished base, 6mm polished side panels for structural integrity and visual clarity
Construction: Expertly sealed with clear silicone – clean and watertight
Base Support: Includes white polystyrene base to prevent pressure cracks and absorb minor vibrations
Finish: Fully polished glass edges for a refined look
Display-Ready: Strong enough for large aquascapes or robust fish communities
Stand Compatible: Built to pair perfectly with our reinforced aquarium stands for long-term safety
📄 Product Description
The Black Diamond 4ft Polished Tank is a top-tier glass aquarium designed to accommodate larger aquatic setups with confidence. Its expansive 1220 x 450 x 450 mm footprint allows for full aquascapes, detailed décor, and territorial species.
With a 10mm polished base to handle volume weight and 6mm side panels for clean visibility, this tank offers both reliability and sleekness. It’s ideal for either freshwater or low-tech planted tanks, and its structural strength makes it a versatile centrepiece for homes or store displays alike.
🐠 Recommended Species / Families
Cichlid Setups (Severums, Electric Yellows, Acaras)
Goldfish Varieties (Fantails, Orandas, Black Moors)
Peaceful Community Tanks (Gouramis, Rainbowfish, Rasboras)
Planted Aquascapes with driftwood, rocks, and robust species like Anubias and Java Fern
Schooling Mid-Sized Tetras or Livebearers
⚠️ Important Note
This tank is heavy when filled – it is essential that it is placed on a level, reinforced surface. We strongly recommend our custom-fit Black Diamond stands to ensure the tank’s weight is evenly distributed and supported over time.
Collection & returns
Collection & returns
Collect in store: For now, orders are collect in store only. At checkout, choose Pickup at Oakfields (Benoni), or the free Collect in store option for Stoneridge (Edenvale) or Woodbridge (Kempton Park). We email you when your order is ready to collect, usually within 2 to 4 days. Nationwide delivery is coming soon.
Damaged? Please check your order when you collect it. If anything is broken or damaged, tell our store team or contact us as soon as you can with photos of the item and the packaging, and we will replace or refund it at no cost to you.
Changed your mind? You can cancel an online order within 7 days after you receive your goods, without giving a reason (ECTA). You pay only the direct cost of returning it. This does not apply to custom builds made to your specifications.
Faulty or not as described? Under the Consumer Protection Act you have 6 months from when you receive an item to return it if it is defective, at our cost, and choose a repair, a replacement or a refund.
Common questions
Common questions
How thick is the glass?
The glass thickness for each tank is given in its title or description. Across the Black Diamond range it goes from 3mm glass on the 1ft tanks to a 10mm base with 6mm sides on the 4ft tanks.
Is the silicone clear or black?
Black Silicone Series tanks are sealed with black silicone. The other Black Diamond tanks are sealed with clear silicone.
What is included?
It comes with a white polystyrene base. Everything that is included is listed in the product description. If you are unsure, ask us before you order.
Can I get it delivered?
Not yet. For now, orders are collect in store only. At checkout, choose Pickup at Oakfields (Benoni), or the free Collect in store option for Stoneridge (Edenvale) or Woodbridge (Kempton Park). We email you when it is ready, usually within 2 to 4 days. Nationwide delivery is coming soon.
What if it is damaged?
Please check it when you collect it. If anything is broken or damaged, tell our store team or contact us with photos, and we will replace or refund it at no cost to you.
How do I pay?
Pay by card through our secure checkout. The payment options are shown at checkout, and all prices are in South African Rand (ZAR).
Can I get a custom size?
Yes. See custom builds, or send us a message.
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