6 Best Fiberglass Tanks for Industrial Applications

Watching a cheap poly tank split open after a hard freeze is a lesson you only need to learn once. Suddenly, a thousand gallons of precious rainwater are gone, and you’re left with a useless piece of plastic and a big problem. Choosing the right tank isn’t just about storage; it’s about investing in your farm’s resilience and reliability for decades to come.

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Why Choose Fiberglass for Industrial Tanks?

When you hear "industrial," think "farm-grade." Most of the plastic tanks sold at farm supply stores are fine for basic water storage, but they have their limits. Over years of sun exposure, polyethylene can become brittle, and extreme temperature swings can stress the material, leading to cracks and failures. Fiberglass, or more accurately, Fiber-Reinforced Plastic (FRP), is a significant step up in durability, built for applications far more demanding than a simple rain barrel.

The real magic of fiberglass is its resistance to corrosion. Steel tanks will inevitably rust, especially when holding anything other than pure water. Liquid fertilizers, mineral-heavy well water, or even certain water treatment solutions can eat away at metal over time. FRP is inert to a huge range of chemicals, meaning the tank you buy to store liquid nitrogen today will be just as solid in a decade. You’re not just buying a container; you’re buying peace of mind against leaks and contamination.

Finally, fiberglass offers incredible strength without the massive weight of steel. This makes delivery and installation far more manageable on a small farm, where you might not have a crane on standby. A well-made fiberglass tank can be set on a properly prepared gravel or concrete pad with a tractor and a few helping hands, giving you a permanent, worry-free storage solution that will outlast any standard poly tank on the market.

Key Factors in Selecting Your Fiberglass Tank

Before you even look at brands, you need a clear answer to one question: what, exactly, are you storing? The substance dictates the tank’s construction, specifically the type of resin and interior liner used. A tank built for potable water is different from one designed for diesel fuel, and both are different from a tank meant to hold corrosive fertilizers. Mismatching the tank to the material is a costly mistake, so be precise about your needs from the start.

Next, consider volume and location. It’s tempting to buy a tank that fits your immediate needs, but it’s wiser to plan for five or ten years down the road. Upgrading from a 2,000-gallon tank to a 5,000-gallon tank later is far more expensive than just buying the larger one now. Think about whether the tank will be above or below ground, as this dramatically changes the required structural integrity and installation process. An underground tank needs to withstand soil pressure and potential groundwater, a much tougher job than simply sitting on a pad.

With the basics decided, you can narrow down the specifics. Don’t overlook these critical details:

• Fittings and Vents: Ensure the tank can be ordered with the right size and type of connections for your pumps and plumbing. Proper venting is also crucial to prevent pressure or vacuum issues during filling and emptying.
• Single-Wall vs. Double-Wall: For fuel or any chemical that would cause environmental damage if it leaked, a double-wall tank is essential. The outer wall provides secondary containment, offering a vital layer of safety.
• Certifications: If you’re storing water for livestock or home use, look for an NSF/ANSI 61 certification, which guarantees the materials are safe for potable water.
• UV Protection: For above-ground tanks, a quality exterior coating to protect against sun degradation is non-negotiable.

Belco Dual-Laminate Tanks for Corrosives

If you’re getting serious about liquid inputs, you need a tank that won’t even flinch at holding them. Belco specializes in tanks for the tough stuff, and their dual-laminate models are the perfect example. They combine the structural strength of fiberglass with a corrosion-resistant thermoplastic inner liner (like PVC or polypropylene), creating a container that can safely hold aggressive chemicals for years without degradation.

Think of it as the best of both worlds. The inner liner provides a seamless, non-reactive barrier against whatever you’re storing, while the outer fiberglass shell provides the muscle to handle the weight and pressure. This construction is overkill for simple water storage, but it’s absolutely necessary for many common liquid fertilizers, acidic cleaning solutions used in dairy operations, or other specialty farm chemicals.

This is the tank for you if you’re storing anything that makes you nervous about spills. If the thought of a leak contaminating your soil or creating a hazardous situation is keeping you up at night, investing in a Belco dual-laminate tank is the right move. It’s a professional-grade solution for safely managing the more potent liquids that can make a modern farm run efficiently.

Xerxes Double-Wall Tanks for Fuel Storage

On-farm fuel storage is a big responsibility, and cutting corners is not an option. Xerxes tanks are the industry standard for underground fuel storage for a reason: they are incredibly tough, 100% rust-proof, and designed with safety as the top priority. Their double-wall construction provides integrated secondary containment, meaning if the inner wall were ever breached, the fuel is safely held in the outer wall, preventing a disastrous environmental leak.

These tanks are designed for burial, which is often the safest and most convenient way to store large quantities of fuel. Out of sight and protected from vehicle traffic and weather, a buried Xerxes tank is a permanent asset. Because it’s fiberglass, you’ll never worry about the rust that plagues underground steel tanks, which is a leading cause of fuel leaks.

If you need to store diesel or gasoline on your property, especially underground, this is your tank. The peace of mind that comes from a double-wall, corrosion-proof Xerxes tank is worth every penny. It’s a serious investment in your farm’s infrastructure and your environmental stewardship.

FTC Sectional Tanks for Potable Water

Sometimes the biggest challenge isn’t the tank itself, but getting it where it needs to go. FTC’s sectional tanks solve this problem brilliantly. These tanks are delivered in panels and assembled on-site, allowing you to build a massive water storage reservoir in a basement, on a remote hilltop for a gravity-fed system, or in any location a large, one-piece tank could never reach.

Because they are assembled in place, you can achieve huge storage volumes without needing a crane or a massive entryway. The panels are bolted together with a specialized sealant, creating a durable, watertight container. Critically, these tanks are certified to NSF/ANSI 61 standards, making them an excellent choice for storing potable water for your home, livestock, or irrigation for organic crops.

If you need a very large volume of water or have a challenging, hard-to-access site, the FTC sectional tank is the perfect solution. It turns logistical nightmares into straightforward projects. For anyone building a large-scale rainwater harvesting system or needing a reliable water supply in a remote part of their property, this modular approach is a game-changer.

Diamond Fiberglass Custom Fabricated Tanks

Off-the-shelf tanks are great, but farms are rarely standard. You might have a specific height restriction under a barn’s eaves, need a rectangular tank to fit a narrow space, or require a complex set of fittings for a custom processing system. This is where a custom fabricator like Diamond Fiberglass comes in. They don’t just sell tanks; they engineer solutions.

Working with a custom builder means you get the exact dimensions, shape, and configuration you need. Need a tank with an internal baffle to help settle solids? They can do that. Need multiple compartments within a single tank to hold different liquids? No problem. You’re not forced to compromise your plan to fit a standard product.

If you’ve looked at the standard catalogs and nothing quite works for your unique situation, stop compromising and get a quote from Diamond. For specialized applications like brewing compost tea, mixing inputs, or building a unique water treatment system, a custom-built tank is often the smartest and most efficient long-term choice.

Plas-Tanks Scrubber Vessels for Odor Control

Good fences make good neighbors, but sometimes you need more than that. Certain farm activities, like storing manure slurry, brewing large batches of compost tea, or running a small-scale composting operation, can generate powerful odors. A scrubber vessel from a company like Plas-Tanks is a specialized tool designed to manage this exact problem by treating the air vented from a storage tank.

A scrubber works by passing the odorous air through a system that neutralizes the offending compounds before they are released into the atmosphere. It’s essentially an air filter for your tank. While it may seem like an unnecessary expense, it can be a critical piece of equipment for maintaining good relationships with those living downwind, especially as rural areas become more populated.

This is not a tank for everyone, but if odor management is a concern for your operation, this is the solution. For any farmer bordering a housing development or trying to run a clean, low-impact operation, a scrubber vessel is a proactive investment in community relations and sustainable farming.

Enduro Tuff-Span Tanks for Wastewater

Managing wastewater on a farm is a bigger job than just storing it. Whether it’s wash water from produce, runoff from a small dairy, or greywater from a farm stand, you often need to settle out solids or begin a treatment process. Enduro’s Tuff-Span tanks are built for these tough, dirty jobs. They are often large, rectangular, and feature structural covers that can be walked on, making them ideal as clarifiers, settling basins, or equalization tanks.

These are not just simple holding tanks; they are processing vessels. The large surface area and durable construction make them perfect for the first stage of a small-scale wastewater management system. The fiberglass construction ensures they won’t corrode from whatever is in the water, providing a long-term, reliable component for your farm’s water handling infrastructure.

When your needs go beyond simple storage and into active water management or treatment, Enduro is the name to look for. If you are setting up a system to recycle wash water or manage effluent from an animal operation, these tanks provide the heavy-duty, large-format solution required to do the job right.

Proper Installation and Siting Considerations

A fiberglass tank is only as good as the ground it sits on. The single most important factor in a long and trouble-free service life is a proper foundation. The base must be perfectly level, smooth, and fully supported. This usually means a 4-6 inch deep pad of compacted sand or pea gravel, or for larger tanks, a reinforced concrete slab. An uneven or shifting base will create stress points on the tank, which is the leading cause of failure.

Think carefully about location. You need to be able to get a delivery truck to the site, as well as any tanker trucks for filling if you’re storing fuel or fertilizer. Ensure you have clear access to all valves, hatches, and fittings for routine operation and maintenance. Also, consider drainage—site the tank where water will flow away from the base, not pool around it.

If you are considering an underground tank, the complexity multiplies. Installation is not a DIY project. It requires careful excavation, the right kind of backfill material (like pea gravel) to support the tank evenly, and anchoring to prevent it from "floating" out of the ground in areas with a high water table. For underground installations, hiring an experienced professional is essential.

Long-Term Maintenance for Fiberglass Tanks

One of the best things about fiberglass tanks is how little maintenance they require, but low-maintenance doesn’t mean no-maintenance. At least once or twice a year, give the tank a thorough visual inspection. Look for any chalking of the exterior surface, spiderweb-like cracking (crazing), or any signs of impact from equipment. Pay close attention to the areas around fittings and seams, checking for any drips or moisture.

Keep the tank and the area around it clean. Don’t let leaves, dirt, or other debris accumulate on top of the tank, as this can hold moisture against the surface and accelerate wear on the exterior gel coat. For potable water tanks, plan on a periodic clean-out every few years to remove any sediment that has settled on the bottom.

If you do find minor surface damage, it can often be repaired with a fiberglass patch kit. However, for any damage that appears to be structural—deep cracks, soft spots, or delamination—it’s crucial to contact the manufacturer or a professional tank repair service. Addressing small problems early is the key to ensuring your tank provides decades of reliable service.

Choosing a heavy-duty fiberglass tank is a significant step up, moving from temporary fixes to permanent infrastructure. It’s an investment in operational security, environmental safety, and the long-term value of your farm. By matching the right tank to your specific needs and installing it correctly, you’re building a foundation of reliability that will pay dividends for years to come.