Onion Tanks
- they are self erecting - they increase in height as fast as you can fill them. This is because they have a floating collar.
- the wide necks on the onion tanks allow fast fill and empty cycles (for example bushfire fighting water buckets can be dipped into the larger sizes)
- they are compact when empty and can be packed into the groundsheet that doubles as a carry bag
- they are low profile and can be used in limited height areas (for example in spill containment management or dense bush areas)

Onion bladder tanks are a unique short term portable tank solution designed to be able to take a tank to a remote or difficult location to be used for water or other liquid storage. They can be used multiple times and,provided they are handled with care when being transported, will give many years of water storage. Please note that they are designed to be portable tanks that can be transported while empty. They are not designed to transport water. If you have a water or other liquid transport requirement, please see our range of Liquid Transport Solutions.
Possible applications for onion water storage tanks include:
- bushfire fighting water tanks in remote locations (particularly as a water station for helicopter water buckets where they are filled from a shallower source)
- temporary water storage that easily fits on the back of a ute when packed (e.g. for swimming pool maintenance)
- Temporary farm and rural water tanks that can be shifted as and when required
Almost any fittings can be used with Waterplex onion tanks. If you have special requirements or you are not sure if the reo sac Onion tank is suitable for your application, call the team at Waterplex on 1300 72 66 70 and they will be able to provide expert guidance and advice.
Alternatively you can download the Onion tank brochure from this page.
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