Square poly stock tanks offer durable, weather‑resistant options for livestock watering, feed storage, and outdoor cleaning tasks. This guide highlights five top square tanks, with a closer look at capacity, material strength, and practical uses on farms, ranches, and remote work sites. Each product includes a clear image, key features, and a direct purchase link for quick comparison.
| Product | Brand | Capacity | Key Feature |
|---|---|---|---|
| Stock Tank 100-Gallons | Rubbermaid Commercial Products | 100 Gallons | Durable rigidcell construction |
| Horizontal Square Reservoir 50 Gallons | RomoTech | 50 Gallons | Clear markings and UV-stabilized poly |
| Stock Tank 150-Gallons | Rubbermaid Commercial Products | 150 Gallons | Durable rigidcell construction |
| Behlen Poly Tank Plug | Behlen Country | Plug and Washer | Rust‑free poly accessories |
| Stock Tank 300-Gallons | Rubbermaid Commercial Products | 300 Gallons | Durable rigidcell construction |
Rubbermaid 100-Gallon Stock Tank
The Rubbermaid 100-Gallon Stock Tank uses rigidcell construction to deliver durable performance in varying weather. This tank is designed for livestock watering, feed storage, and outdoor use with a focus on long-lasting strength. It carries a category‑leading 10‑year limited warranty and is manufactured in the USA, making it a practical choice for operators seeking reliability and domestic production.
- Durable rigidcell construction for all-weather performance
- 10‑year limited warranty for long-term use
- Made in the USA
RomoTech 50 Gallon Square Reservoir
The RomoTech 50‑Gallon Square Reservoir is a versatile, UV‑stabilized poly tank with clear gallon and liter markings. Its natural translucent polymer makes level checks quick, while the material resists rust and weather exposure. Designed for outdoor use on farms, RVs, or work sites, it supports reliable water storage and non‑flammable liquid containment. The tank includes an oversized lid and built‑in bulkhead fitting for easy filling, draining, and connections to hoses or pumps.
- 50 gallon capacity with clear volume markings
- UV‑stabilized, rustproof poly construction
- Easy fill and drain with bulkhead fittings and 3/4″ NPT outlet
Rubbermaid 150-Gallon Stock Tank
With a larger 150‑gallon capacity, this Rubbermaid stock tank extends the same durable rigidcell construction and USA manufacturing heritage. It is built for outdoor livestock care, dog washing, or pool‑style setups for a tougher climate. The model is backed by Rubbermaid’s trusted warranty, making it a practical option for farms needing a robust water or feed container with extended service life.
- Durable rigidcell construction for all‑weather durability
- 10‑year limited warranty
- Made in the USA
Rubbermaid 300-Gallon Stock Tank
The 300‑Gallon Rubbermaid stock tank brings substantial capacity for large‑scale livestock needs or intensive outdoor cleaning tasks. Its durable rigidcell construction excels in varied climates, and the 10‑year warranty provides long‑term confidence. Made in the USA, this tank is a robust choice for operations that require significant water or feed storage with reliable performance over time.
- High‑capacity 300 gallons for large applications
- Rigidcell construction for durability
- 10‑year warranty and USA production
Buying Guide: Key Purchase Considerations
When selecting a square poly stock tank, consider capacity, durability, and intended use. For livestock watering or feeding at larger farms, higher capacity tanks reduce refills but require more space and handling. For mobile or RV settings, lighter, easily portable options with convenient lids and fittings are advantageous. UV stabilization helps extend life in direct sun, while corrosion resistance matters for chemical compatibility and outdoor cleaning tasks. All‑weather performance benefits from rigidcell or reinforced structures that resist warping in cold temperatures. Look for tanks with built‑in outlets or bulkhead fittings to simplify connections to hoses, pumps, or irrigation lines. Finally, factory warranties provide reassurance for long‑term investments in durable, American‑made products.
Product selection should also align with safety and compliance needs, such as non‑flammable liquid compatibility and rust resistance for prolonged outdoor use. If you require versatility, opt for tanks that can support multiple tasks, including water storage, feed containment, and basic pool or wash applications. Assess available mounting or placement options—flat, stable ground is essential to prevent tipping or uneven wear. For those prioritizing cost efficiency, compare total capacity against expected daily usage to determine optimal tank size without overspending.