In a previous article, we saw how the raw materials of a tank often differ in quality despite being named the same general material, for example, different grades of steel and poly mixes. This is one identifiable factor in higher and lesser quality tanks. What determines the value and strength of poly tanks though? This article aims […]

When investing in something large or costly you want to know that it will last. Every brand and business will always guarantee a quality product, but we often discover that this is not actually the case. So as a consumer, it is always reassuring to have a warranty that can be claimed upon just in […]

  When it comes to selecting a rainwater tank to purchase you’ll need to choose a particular model type. If you have open spaces on your property, then maybe a large round water tank will be fine. On the other hand, if you don’t have much space then a slimline tank or two joined together might work […]

Many rainwater tank suppliers often state their poly tank materials comply with the AS/NZS 4766 (“Polyethylene Storage Tanks for Water and Chemicals”). If a company claims their poly tanks are certified to the AS/NZS 4766, this does not guarantee that yours will be. This is because it is actually left up to the manufacturer to ensure quality […]

In terms of durability, there is a belief circulated around that all poly water tanks will become brittle and break down in the Sun. After all, polymer is a plastic and we have all seen how plastic objects decompose and become powdery over time. This is similar to saying all steel will corrode in the […]

Rotathene® SUPA UV Rotathene® SUPA UV provides superior protection for rotomoulded products by incorporating advanced additive technology. Traditionally a UV8 level of stabilisation has been considered the minimum required for good long term protection in Australia. This is the level specified in the Australian Tanks Standard, AS/NZS4766:2006. As seen in our article, Testing Poly Tank UV […]

Which Water Tank Material is Best? Rainwater tanks come in a lot of different sizes, shapes and materials. This article covers some advantages and disadvantages of the most commonly used materials in rainwater tanks. Decide for yourself which type of water tank best suits your needs. Fibreglass Water Tanks Fibreglass tanks need a food-grade coating to be […]

What is SUPA UV? Rotathene® provides a much higher level of protection against the Sun than the required industry standard for poly tanks. It is referred to as “SUPA UV” for this reason. Rotathene® SUPA UV provides superior protection for rotomoulded products by incorporating advanced additive technology to last 4.5 times more than the Australian […]

Burying a water tank is sometimes desirable to reduce their height, or placing them completely underground if you don’t have much surface space. Poly water tanks are the ideal solution, since steel tanks obviously can’t be buried since they will rust and corrode. This article will reveal what you need to know if you wish […]

Many are familiar with the use and installation of individual water storage tanks, but the setup of multiple storage tanks in a rainwater harvesting system often isn’t considered. The use of multiple water tanks in larger scale water storage endeavours is neither difficult nor uncommon. This article looks at some benefits of linking multiple poly […]

National Poly Industries specialise in polyethylene tanks and in this article it will be presumed that you are looking to install one of our round poly rainwater tanks. So you’ve decided to invest in a National Poly rainwater tank. Congratulations! You won’t be disappointed in your choice of our poly tanks – some of the lightest, highest […]

When choosing your rainwater tank, there are a number of things to consider. The more obvious things are what water tank material you should go for, and what size water tank do you need. Most choose food-grade poly rainwater tanks due to their strength, light weight and reasonable price. An advantage to poly tanks is […]

Before you invest in a new water tank to store rainwater, perform some careful planning and consider a system setup of linking two or more water tanks together. A multiple water tank setup for rainwater harvesting provides many benefits including: Multiple tanks can be more cost-effective Reduction of lost water in tank failure or water contamination Expandable […]

What is SUPA UV? Rotathene® provides a much higher level of protection against the Sun than the required industry standard for poly tanks. It is referred to as “SUPA UV” for this reason. Traditionally a UV8 level of stabilisation has been considered the minimum required for good long term protection in Australia. This is the […]