A roomy round tank built for busy fish and happy farmers
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A friendly, flexible tank that fits almost any aquaculture plan.
This 300 gallon round aquaculture tank from MK Aquarium is a simple, sturdy home for fish, shrimp, turtles, and more. Its smooth blue design, stainless steel fittings, and easy drain system make it a go‑to pick for hobbyists and pros who want a reliable pond tank or aquaponics setup without stress.
Strong, portable, and ready for year‑round fun.
✔ Easy to place indoors or outdoors
✔ Great for fish breeding and aquaponics systems
✔ Smooth round shape keeps water moving naturally
✔ Simple drain system for quick water changes
✔ Durable build with stainless steel fittings
Available in sizes from 180 to 3300 gallons. For the 300 gallon model, the diameter is about 1.2 m and height is about 1.0 m. Rinse before first use and check fittings before filling.
We offer reliable tracked shipping delivered to your door in 200+ countries.
Processing time: up to 2 business days (may be longer during peak periods).
Estimated delivery times (after dispatch)
We ship from fulfillment centers in the United States, Eastern Asia, and Western Europe. If an item is out of stock in your nearest location, we’ll ship it from another location or production within the same delivery ranges above.
Can I use this tank outdoors year-round?
Yes, the tank is built with durable PVC Canvas and stainless steel fittings, making it suitable for outdoor or indoor use.
Does it include a drain system?
Yes, it comes with a drain system plus a 32 mm water outlet and valve for easy water changes.
Is it good for fish breeding?
Yes, the round shape and roomy design make it great for breeding koi, shrimp, and other aquatic animals.
Choose the right size for your Koi show or aquaculture project. Our size chart helps you select the best fit.
Contact us today at: support@mkaquariumstore.com to discuss your custom requirements and get a personalized quote.
The tank is quick to place and install, so you can build your pond or aquaponics system on your schedule.
High‑quality plastic and stainless steel fittings give you long‑lasting support for your aquatic crew.
Its round shape keeps water flowing gently and helps fish feel comfortable.
Perfect for koi, shrimp, turtles, and more, letting you grow your hobby your way.
Made for indoor and outdoor environments, so your setup stays steady in every season.
A long-lasting pond built for daily use and designed to look great for 5+ years with proper care.
A dependable tank built for real aquaculture needs.
| Features | MK Aquarium | Knock-Offs |
|---|---|---|
| Round design for natural water flow | ||
| Stainless steel fittings included | ||
| Built‑in drain system with valve | ||
| Indoor and outdoor ready | ||
| Multiple size options up to 3300 gallons | ||
| Portable and easy to set up | ||
| High‑quality plastic construction | ||
| Smooth round interior walls | ||
| Strong stainless steel pipe brackets |
Yes, the smooth round interior and sturdy materials make it safe for many species, including turtles and shrimp.
It is portable before filling, but once filled it should stay in place due to weight.
No, you only need basic hand tightening for the fittings. Setup is simple and quick.
Yes, the size and round design make it a good choice for temporary koi holding.
It includes a rubber cover, but it is not a full hard lid.
Use the built‑in drain system for water changes and gently rinse the interior as needed.
The plastic is made for regular outdoor use, though normal aging over time is expected.
Yes, it fits well into many aquaponic setups thanks to its large volume and easy plumbing.
Yes, they are stainless steel, which helps them stay strong in wet environments.
