engineered poly products

Engineered Poly Products
Frequently Asked Questions

Still not sure whether Coerco poly products are right for your operation? Read on for answers to some of our fequently asked questions...

If you have a question that's not covered here, or if you want to talk to one of our expert advisers about your setup, get in touch with us at 1800 860 851 or email info@coerco.com.au

I’ve seen a cheaper product; why should I spend more on Coerco?

Buying a cheap water tank can actually end up costing you more money in the long term. A poorly designed and manufactured tank will never be as reliable or durable as a good quality product, and it is likely to fail prematurely. Issues with cracking, fittings breaking and taps failing can happen after just a few years, meaning you’ll have to pay for repairs or replacement.

A well-designed water tank will also be easier to maintain than one made using inferior materials. Some water tanks let in too much light, for example, meaning that they need to be cleaned more often due to problems with algae.

As the saying goes, ‘buy cheap, buy twice’. Coerco Water Tanks are not the cheapest on the market, but they are the best. Our premium tanks come with an impressive 20-year warranty against failure caused by inferior workmanship or materials, but we’re confident you won’t need to use it.

How long will it take to get my tank after I order?

Our lead times vary depending on the type of water tank you order and whether you need any non-standard features or fittings. When you place your order, let us know if you have a specific date in mind, and once we’ve agreed on a timescale with you, we’ll always stick to it.

What about delivery?

At Coerco, we’re able to have complete control over our delivery process thanks to our own fleet of dedicated delivery vehicles. All our drivers are specially trained in how to move and handle water tanks safely to avoid any damage. Delivery is included in your quote from us, so you know you’re getting the best possible service at every stage. All poly tanks 9,000 litres and above come with free delivery to within 800 kilometres of Perth WA.

Depending on the size of your tank, we may need specific access requirements in order for our delivery vehicle to reach your property. Clear access on roads, lane ways, through gateways, crossings and trees are essential to ensure safe delivery of your tank without damage. If a driver cannot reach the location, the tank/s will be left at the closest practical position. This may mean you will need to have a smaller vehicle that will be able to transport the tank to the prepared tank pad.

How do I know what size tank to choose? What about all the fittings?

The size of your water tank will depend on the volume of water you need to use for your regular operations, and how you collect that water. Bear in mind that if you only have the space for a small tank, it will need to be refilled more frequently than if you collect and store a larger volume. If you’re collecting rainwater from guttering, your tank inlet must be lower than the gutter, so you need to size and position your tank accordingly. If you need help selecting the perfect tank size for your dimensions, please visit: https://offers.coerco.com.au/water-tank-selector-tool

Once you've chosen the right size tank for your needs, you need to figure out how you're going to get the water into and out of the tank. That's where your tank inlet and outlet come into play. These fixtures need to be correctly sized for your needs and made of durable materials that last. When ordering a tank be sure to be clear on what size outlets you require and where they are to be fitted on the tank. If you are unsure, we do have a standard fitting fit-out that suits most applications.

I use other methods of collecting and storing water; is a water tank really better?

The goal of farm water planning is to have the amount of water you need, where you need it, when you need it. Many farmers rely on a variety of methods for ensuring they have enough usable water even during the dry season. These can include dams, water wells, surface water storage and natural ponds.

While these methods may work fine if the weather behaves predictably, surface water storage is very inefficient and often has a high evaporation rate. During extended periods of drought, surface water storage may dry up completely. Using an enclosed poly storage tank ensures that there is no loss of already-collected water, and that it is kept clean and safe ready for use.

Are poly water tanks the best choice compared to other materials?

Water Storage Tanks can be made from a variety of materials. To help make your decision less confusing, we’ve prepared this handy comparison table:

ADVANTAGES DISADVANTAGES
POLY • Poly tanks come in many different sizes, shapes, colours, combinations and with multiple connection possibilities. They can go either above or below ground.
• Poly tanks are easier to transport, position or move according to necessity. Their fast and easy installation means lower costs.
• Poly tanks are lightweight but they are strong and durable, can withstand harsh climate conditions and are one piece construction meaning there are no seams to cause weak points. Rustproof material means longer life.
• Built in compliance to AS/NZS 4020 that involves testing of products for use in contact with drinking water.
• Poly tanks are the second cheapest (after metal), but because they out-last metal, they are more cost-effective.
• At the end of their life-cycle (known to be more than 30 years), proper recycling is necessary.
• High Fire Risk – It is important to note that most tanks including poly tanks risk failure in a fire, just as any building, pump or pipework would, unless they are in a fire break zone.
FIBREGLASS • Fibreglass tanks are available in multiple sizes and work both above and below ground.
• Because the material is not metal, they will not rust.
• Fibreglass material allows more light penetration, resulting in more algae growth.
• Require an external UV-resistant gelcoat which if damaged can reduce the life of the tank.
• Fibreglass is a brittle material that cracks much more easily than other materials. Fibreglass tanks require a food grade coating on the interior which is cured before sale. If damaged during the life of the tank it can expose the raw fibreglass which can release dangerous chemicals into the water
• Cost: Can be more expensive than poly tanks.
CONCRETE • Concrete tanks can be built above or below ground, available in different sizes and capacities, pre-cast and transported to the site or built on-site. They are long-lasting.
• They have maximum strength due to reinforced steel in the concrete.
• Rust resistant with little risk of corrosion.
• Cracks in concrete are fairly easy to repair with applications of waterproof paint, membrane or resin; however, these applications do not prevent cracking.
• Concrete tanks are more expensive to build.
• Tanks are in permanent position.
• New tanks may leach out lime and other minerals thereby increasing the water pH and affecting the water taste.
• Concrete construction is energy intensive.
METAL • There are many sizes and capacities available and they can withstand harsh conditions including fire.
• They are the least expensive type, initially.
• Material is UV resistant.
• Metal tanks have a much shorter lifespan due to corrosion, different types of water may cause even faster corrosion. In these instances, adding a poly liner means a longer tank life but added expense.
• Corrugated steel tanks cannot be placed underground.
• Moving the tanks once they are in place is difficult. Liners used in Metal Tanks are comparatively very thin and the risk of the liner being pierced and failing is higher than all other tank types.
• Ground work before installation can be costly and involves extensive preparation when compared to other tank types.