Frequently Asked Questions

What about cleaning?

How often do you clean other forms of tanks?

The key to a long lasting system is sediment prevention from the start. Every downpipe feeding water into the system has a leaf slide to divert leaves away from the tank, and there is a silt prevention pit to stop smaller sediment entering the system.

This pit should be inspected once a year and cleaned out as needed by hand or with a wet vac.

The extremely minimal amounts of sediment that do get into the tank are very fine, and normally wash away with the water.

It is recommended that the Aquacomb© system should be inspected annually, and vacuumed out when needed, usually not more than once every ten years. This can be done by any tank cleaning company. For Auckland based installations we recommend Hydrovac who has assessed the system for its cleaning needs.

As the Aquacomb© tanks have been designed so that the lowest pipe is 20mm off the bottom of the pod, any sediment that does manage to settle, will always stay in the first pod of your system, meaning only the first pod will ever need to be cleaned out.

An official letter outlining cleaning recommendations from Hydrovac can be had on request.

What happens if they leak?

  1. In over 15,000 installs over 15 years in Australia and New Zealand there has not been one leak, so we are very confident, that if installed by an approved Aquacomb© installer, there will be no problems.

  2. However, if there ever was an issue Aquacomb‘s© insurance policy covers the location of faulty unit, drilling through the floor to inject foam in the unit to seal it and due to the parallel connections between all units just the offending unit is isolated and fixed. If there was a fault unable to be easily fixed then the system can emptied, capped and an alternative system provided elsewhere on the property.

Where can they be installed?

Due to Aquacombs© modular system as many as necessary can be laid in multiple configurations;

In a single layer -

     In concrete slab foundations, or

     Under driveways and carparks, or

     Under decks.

Up to three deep (on top of each other) -

     Under the floor in houses on piles or under decks that are higher off the ground.

Or on their edge -

     Behind retaining walls

How do they carry the weight of the concrete floor?

Each Aquacomb© unit is rated to withstand 2 tonnes of weight, as much or more than the polystyrene pods that they replace. As an approved void former, the concrete floor actually bridges all loads past the tanks, so they do not take any direct loadings.

What do they get laid on?

Just the same as Polystryrene pods, they are laid on a plastic membrane on sand or other leveling substrate.

Who installs them?

Any Aquacomb approved plumber or drainlayer can install the Aquacomb© system. We have comprehensive installation videos and a simple easy to follow manual. They MUST use our ‘Dogbone” proprietary connection unit to ensure a perfect fit every time. Contact us to find out more about becoming an Aquacomb approved installer. 

What about Earthquakes?

Being located in the floorslab they are less prone to damage from exterior influences than free standing external tanks and therefore are less likely to be affected.

If the floorslab is affected then just like the polystryrene pods that they replace, the floor will be damaged and have to be fixed or replaced as required.

How much area does each take up?

Each Aquacomb© is 1100mm x 1100mm square and either 225mm or 300mm deep. When joined together on a flat surface we allow an area of 1200 x 1200 to allow for the pipe connections (1.44m2 each).

How do they drain?

As a detention system gravity does the trick! The outlet is at a lower level than the inlet.

For Retention (or water re-use) a pump is connected to extract the water from the Aquacomb© system, same as any other tank.

What if they get Blocked?

This is almost impossible as each system has a leaf screen installed in the downpipe to exclude all large foreign matter before the point of entry to the secondary device, the AquaPit. However in the highly unlikely event that this did happen then a vacuum would solve the issue.

What if they fill up?

Our overflow prevention system is extremely simple but effective. If the system ever fills up past 100% the water will simply be diverted down the stormwater overflow connection. This essentially connects the fill pipe to the stormwater directly, in similar vain to an overflow prevention hole on your kitchen sink.

What are your Terms of Trade?

To view our Terms of Trade, click here.