Stock Tanks

Choosing a stock tank for livestock means balancing the animals' drinking needs with tank size, durability, maintenance, and delivery logistics. A small round-end trough for a pen of sheep has different requirements from a large water reservoir for cattle in a remote pasture. Material, shape, drainage, water supply, and access are just as important as the number of gallons the tank holds.

Barn World offers galvanized steel stock tanks, molded polyethylene water tanks, and large bottomless stock tank systems. The main Stock Tanks page is a guide to those product families. The individual tank sizes and available options are listed within the collections below, where you can compare models and request freight quotes.

Many of these tanks are bulky freight items intended to ship in nested groups or by truckload. Individual-tank delivery is unavailable for certain product lines, so consider the number of tanks needed and the delivery location early in the selection process.

Shop Stock Tanks by Material and Design

• Galvanized Stock Tanks — round and round-end livestock watering troughs made with galvanized steel, in listed 20- and 22-gauge configurations
• Poly Stock Tanks — one-piece polyethylene tanks in round, round-end, and selected rectangular forms
• Bottomless Stock Tanks — large-diameter steel-wall reservoir systems assembled on a prepared, watertight base, with compatible liner options

These categories serve different buying needs. If your main goal is to add a water supply to an existing cattle pen, a finished-bottom stock tank may be a practical choice. If you need substantial stored water in a remote pasture, a properly installed bottomless system may be worth considering. If you need rust-resistant construction, evaluate the molded poly models and their shipping requirements.

Compare Galvanized, Poly, and Bottomless Stock Tanks

Do not assume that every tank within a material category carries the same warranty, gauge, wall thickness, drain fitting, or installation instructions. Check the model-specific product listing and the manufacturer's current specifications before making a final decision.

Galvanized Stock Tanks for Cattle and Other Livestock

Galvanized steel stock tanks remain a familiar option for cattle, horses, sheep, and other farm animals. Barn World carries round and round-end tanks constructed with galvanized steel. The current round-tank listings describe G90 galvanized steel in 20- and 22-gauge configurations, with the top edge rolled around a steel pipe to stiffen the rim.

For certain listed 22-gauge tanks, the bottom is made with heavier 20-gauge steel. That distinction matters when comparing models: a tank described as 22-gauge may have a different floor gauge. The round-end galvanized range is also described with a reinforced rim, a four-ply bottom seam, and threaded drain provisions. Confirm the selected product's exact materials and construction rather than assuming identical specifications across manufacturers.

The main advantage of galvanized tanks is a rigid metal construction that can serve well in an appropriate watering area. However, galvanizing can be damaged or worn through, and steel is not completely immune to corrosion. Inspect tank walls, seams, rims and drains as part of ordinary maintenance, especially in environments where water chemistry or manure exposure may accelerate deterioration.

A drain plug can make cleaning and relocation easier, but it must be accessible once the tank is installed. Place the tank where water can be drained without creating a mud or erosion problem, and account for the weight of the water before attempting to move the unit.

Poly Stock Tanks: Rust-Resistant Watering Options

Poly stock tanks are molded from polyethylene rather than steel. That material does not rust, and one-piece molded designs avoid many of the joints and bottom seams found in assembled metal troughs. This can be useful for operations seeking corrosion resistance and an interior that is convenient to wash and inspect.

Barn World carries several Hastings and Sioux Steel poly tank families. The listed Hastings round poly range includes approximately 320-, 580-, and 1,100-gallon options. The Sioux Steel round poly range includes approximately 335-, 530-, and 950-gallon models. These are examples from their respective product listings, not a complete capacity list for every poly stock tank in the store.

Round-end polyethylene models provide an elongated footprint and may suit a pen or fence-line arrangement where a round trough would project too far into a traffic area. Compare the rim height with the animals using the tank. Young calves, sheep or smaller livestock may require a different drinking height or an approved drinker attachment than mature cattle.

Certain poly tanks include a drain plug or bulkhead fitting, while other designs have additional support requirements. One large rectangular poly tank is also offered for secondary containment and livestock water use, with cross braces specified for particular applications. It should not be treated as an ordinary unbraced watering trough without following the manufacturer's directions.

Polyethylene is rust-resistant, but a poly tank still needs a suitable support surface and protection from sharp impacts, improper handling and other damage. Do not assume that every plastic tank is equally resistant to ultraviolet exposure or that all models are designed for the same temperatures and uses.

Round Stock Tanks Versus Round-End Water Troughs

A round tank may be convenient where livestock can approach from several sides and the site has sufficient clearance around it. The circular footprint can also suit central watering locations. Make sure the intended access around the perimeter is not blocked by a fence or narrow alley.

Round-end tanks have two straighter sides joined by curved ends. Their elongated shape can be useful in narrow pens, along a suitable fence line or in areas where animals need access along a longer edge. A tank with a large listed capacity is not necessarily easier to use if its rim is too high or its location restricts drinking space.

Measure width, length, depth and the outside rim dimensions before ordering. The nominal measurements shown in a capacity chart may exclude a rolled lip or other projection that changes the actual delivery and installation clearance. Consider gate widths and machinery access, especially for large tanks that cannot be tilted or moved through a narrow opening.

Large Bottomless Stock Tanks for Remote Water Storage

Bottomless stock tanks are a different class of water reservoir. Their steel wall sections are assembled into a large round structure on site, but there is no manufactured metal bottom. The site must provide a suitable support and a watertight sealing arrangement, or the system must be fitted with a compatible liner designed for the selected tank.

The Sioux Steel bottomless systems offered by Barn World include models with 15-, 21-, and 27-foot diameters in selected wall heights. The listed lined configurations range from approximately 2,688 to 11,486 gallons, depending on size. Hastings also offers large bottomless tanks in its own diameters, wall heights, and steel-gauge choices, including 10- and 12-gauge configurations.

Those capacities should not be applied universally across brands. When comparing models, verify the exact diameter, finished water depth, wall height, gauge, steel weight, and the selected sealing method. A large tank may store substantial water for a herd, but it still needs an adequate incoming water source and a sound installation.

Liner kits may help create a watertight reservoir where a sealed earth or concrete bottom is not preferred. Barn World offers compatible Sioux Steel polyethylene liner kits and related retaining components for certain sizes. A replacement liner kit is not a complete bottomless tank, and compatibility with other brands or dimensions should never be assumed.

Before installation, check grading, bedding or base preparation, drainage outside the tank, required seal materials, access for equipment, and the manufacturer's assembly instructions. A leaking base or improperly installed liner can waste water and create unstable ground around a heavily used watering location.

How to Choose the Right Stock Tank Capacity

A stock tank's gallon capacity measures stored water, not how many cattle or horses it can automatically support. Start with the animals' expected consumption, the reliability and refill rate of the water supply, and whether animals arrive at the water source throughout the day or in larger groups. Hot weather, lactation, body weight and feed type can all change drinking demand.

A small tank with a dependable, high-flow water supply may serve a location differently from a much larger tank that refills slowly. Likewise, a large reservoir may be useful for solar- or wind-driven pumping systems where water delivery varies, but stored volume alone does not replace a plan for peak demand and backup access.

Use species-appropriate livestock-water guidance or advice from a qualified agricultural professional to estimate daily consumption. Then check the available capacity, the refill arrangement, and the number of usable drinking positions. Monitor actual water levels after installation to confirm that the equipment meets the herd's needs.

Tank Height and Animal Access

The best tank size is not determined solely by storage volume. Rim height, drinking depth, and the width of the approach matter for the animals using it. Mature cattle may drink comfortably from a tank that is not practical for lambs, small calves, or young pigs. Some installations use a compatible lower drinking pan or hog drinker rather than asking a shorter animal to reach over a tall rim.

Check that animals can approach and leave without being crowded against gates, fencing or machinery. Provide appropriate footing where they stand. A tank placed in a confined corner may allow only a fraction of its rim to be used, causing competition even when plenty of water remains in the reservoir.

For shared pastures or multi-species groups, assess the needs of the smallest animals and the behavior of the largest. An opening or attachment that fits one class of livestock may be unsuitable for another.

Water Supply, Valves, and Float Controls

A tank can be filled manually, supplied through a controlled line, or incorporated into a larger automatic watering system. Many farms use float valves to maintain a target water level, but the valve and supply arrangement must be compatible with the selected tank. Compare operating pressure, expected refill demand and installation requirements before adding equipment.

Where the tank receives water from a well, windmill, solar pump or remote line, consider what happens if the supply fails. A large tank may provide additional stored water, but a clogged valve or broken supply connection can still cause shortages. Inspect components regularly and maintain a practical backup watering plan.

Do not drill or modify a tank solely because a similar model offers a drinker or valve attachment. Follow the manufacturer's instructions for mounting locations, fittings, support and sealing. Unapproved holes or insufficient reinforcement can damage the tank or create leaks.

Drainage, Cleaning, and Water Quality

Livestock drinking tanks should be inspected for manure, feed particles, algae, sediment, and other contamination. Tank shape, drain location and interior finish can make cleaning easier, but no open water tank stays clean automatically. Use the appropriate cleaning process for the animals and the tank's material, and rinse thoroughly before returning the tank to service.

Before draining a large reservoir, plan where the water will go. Sudden discharge from a large tank can erode soil, flood a working area or overwhelm a drain. Keep spilled water away from the base where it could undermine a bottomless tank's installation or create persistent muddy footing.

Watch for damage around seams, drains, liners and fittings. Small leaks can lead to continuing water loss and wet areas that attract livestock traffic. Check exposed fasteners and sharp edges that could injure animals during drinking. Repair or replace worn components using materials approved for the specific water-storage application.

Cold-Weather Stock Tank Protection

Open stock tanks can freeze during winter. Insulation and large water volume may change the rate of freezing, but neither makes an ordinary open tank freeze-proof. If the watering location will be used during sustained cold, plan suitable freeze protection for the tank, valve and incoming water line.

Barn World carries Tank Heaters and Drinkers for compatible applications. Check the heater's intended tank material, wattage, protection requirements and installation instructions. Electrical equipment used around water and livestock must be installed safely, with suitable grounding, circuit protection and cable protection.

A tank heater should not be added to a plastic liner or poly tank unless the exact heater is approved for that use. Avoid placing cords where livestock can chew, step on or pull them. Keep a contingency plan for extended power failures and frozen supply lines.

Stock Tank Freight: Why Quantity Matters

Large stock tanks create a freight challenge even when the empty tank is comparatively light. The shipping footprint of an eight- or ten-foot tank can be much more important to the carrier than its weight. Manufacturers often design finished-bottom tanks to nest inside one another so several units can travel on the same truck or pallet arrangement.

Several Barn World galvanized and poly tank listings state that individual tanks cannot be shipped using their normal freight arrangement. Minimum practical quantities vary by product; some listings discuss orders of three or five or more, while very large tanks may need truckload shipping or supplier pickup. Do not assume every model has the same minimum order or that a one-tank freight quote is available.

Bottomless systems ship differently because their wall sections and liner components are transported for assembly at the destination. Freight still depends on size, weight, distance, unloading conditions and the selected configuration. A bottomless tank quote should account for the tank panels, any liner kit, installation supplies and site preparation—not just the diameter on the product listing.

Before requesting a quote, supply the tank type, size, quantity, delivery ZIP code, and whether a commercial dock, forklift or other unloading equipment is available. Mention narrow roads, limited truck access or any preference for supplier pickup.

Frequently Asked Questions About Livestock Stock Tanks

Should I buy a galvanized or poly stock tank?

Choose based on the desired shape, size, livestock use, material preference, drainage, and delivery arrangements. Galvanized steel provides rigid metal construction; polyethylene avoids rust and is offered in molded configurations. Both need appropriate care and site preparation.

What is the difference between round and round-end stock tanks?

Round tanks have a circular footprint and can allow access around the rim. Round-end tanks are elongated with curved ends, which may suit narrow pens or fence-line locations. Compare actual dimensions and usable drinking access.

How large are Barn World's poly stock tanks?

Sizes depend on the manufacturer and tank shape. Current examples include Hastings round poly tanks of approximately 320, 580 and 1,100 gallons and Sioux Steel models of approximately 335, 530 and 950 gallons. Check individual listings for all offered configurations.

What does 20-gauge or 22-gauge galvanized steel mean?

It describes the thickness specification of the steel. Some listed 22-gauge tanks have 20-gauge bottoms, so verify the wall and floor specifications separately. Gauge is not a universal measure of finished tank durability or suitability.

Does a bottomless stock tank include a metal floor?

No. Bottomless systems consist of steel walls and require a prepared, watertight base or compatible liner arrangement. Confirm whether any liner is included with the exact model or sold as a separate kit.

Do all stock tanks include drain plugs?

No single specification applies to every model. Many listed galvanized and poly tanks have drain fittings, but the fitting type, placement and included components vary. Confirm the drain details before ordering.

How many cattle can drink from a stock tank?

That depends on animal size, weather, expected water consumption, refill flow and how much of the rim is accessible. Tank gallons alone do not establish a reliable head count.

Can I install a float valve in a stock tank?

Many watering arrangements use float valves, but compatibility, mounting, incoming pressure and refill capacity must be checked for the particular tank. Use approved fittings and installation methods.

Are poly stock tanks suitable for winter use?

Many molded poly tanks are designed for outdoor livestock watering, but an ordinary tank can still freeze. Check whether the tank and any compatible heater are approved for the intended temperatures and installation.

Can I purchase a single large stock tank from Barn World?

Some product lines cannot be shipped individually because of their size and freight arrangements. Bulk or nested shipments are often more economical, and minimum quantities vary. Contact Barn World with the size, quantity and destination to confirm options.

What information is needed for a stock tank freight quote?

Provide material, shape, desired size or gallon capacity, quantity, delivery ZIP code and unloading access. For bottomless tanks, include wall height, steel gauge, liner preference and installation requirements.