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Frequently Asked Questions

No – Concrete has been used to store potable water for hundreds of years and an insignificant amount of lime may leach into the water during first flush. It is of no consequence to gardens or other utilities.

Yes – rebates may vary from time to time even when the tanks are used as retaining walls or courtyard surround.

A pump is recommended for all rainwater tanks but tanks can be fitted to a drip system if required.

Generally a lead time of two to three weeks applies.

Grey water should not be stored for more than 24 hours because of the potential for deadly bacteria build up in the water with very dangerous consequences. Do not store grey water in any tank.

Yes – the finish is entirely at your discretion. Customers usually finish the tanks in keeping with their existing property.

The 90mm overflow may be placed anywhere on each side or end of tank as required (as configured at time of ordering) and is plumbed in at time of installation. See plumbing configurations.

Yes – there is provision for the rain water to enter the tank through the planter top or the sides of each tank as required. Where to place the tanks and the plumbing involved need to be determined at the outset. Landscape Tanks staff will assist in this regard.

Yes – SL 72 and SL 92 mesh reinforcement is used to A/S 3600/2001.The Landscape Tanks far exceed minimum engineering standards for such a product.

Yes – a deeper planter bed top is an optional extra. A deep bed planter top with a 275mm internal planter bed is available, which enables larger plants to be grown in planter bed top. Most customers \”heap\” the centre of the planter boxes to obtain around 500mm of soil and mulch.

If the Landscape Tanks are to be used as retaining walls drainage is required. An aggie pipe surrounded by aggregate as with standard retaining walls is ideal. Engineering drawings and computations are available on request which outline these requirements.

Once customer or Landscape Tanks contractors have prepared the modest base tanks are delivered using an all terrain forklift or crane truck and placed onto footings. Internal plumbing is pushed into place and the lids are then placed into position. Access of 2 metres wide by 2 metres high is all that is required.

Modest footings are required. 50mm of uncompacted crushed rock on stable surface is all that is required. Remove any top soil first. Installation instructions are available to assist in this regard.

No – Landscape Tanks are strategically designed as structural retaining walls and as such a reasonable sized footprint is needed.

A thinner tank would not be suitable as a retaining wall and would be susceptible to falling over.

It would only hold one third of the volume of water because of the wall thickness and would still need an all-terrain vehicle of two metres wide to place in position defeating the purpose of the thinner tank.

Remember, Landscape Tanks do not reduce your garden size it simply raises the garden bed where the tanks are located to a more convenient height.

Landscape Tanks are manufactured to Australian standard and as such have an ‘implied ‘ lifetime of over sixty years, but we expect these high quality tanks to last well in excess of 100 years. A Landscape Tanks can be expected to outlast many timber or even brick retaining walls, making the Landscape Tanks excellent value for money. Best of all the Landscape Tanks will continure to save you money for the life of the product as water costs continue to spiral.

The planter box water drains to waste at the rear of the tank. This avoids cross contamination with the fresh water in the tank beneath.

See pic under plumbing.

No – they are not engineered for stacking, but there is a larger unit available to achieve a greater height.

Landscape Tanks are made from 50mpa concrete and as such do not require sealing. However some external finishes may require a seal prior to application – see the manufacturer\’s label for details.

Yes – engineering computations are available upon request. Landscape Tanks are pre-engineered structural retaining walls. Drawings for your architect, builder, council and landscaper are readily available.

All engineering work has been done avoiding the necessity for customer to go through engineering again.

All engineering has been done assuming the tanks are EMPTY.

The Landscape Tanks come with cast in place \”O\” ring seals of 90mm for the inflow and overflow and 50mm for joining the tanks together and equalising port. The 50mm \”O\” ring is also used for the pump outlet.

Landscape Tanks Pty. Ltd. staff have a huge range of delivery equipment available to suit even the most difficult site. Landscape Tanks can be delivered and placed into position in confined spaces with restricted heights. A free site inspection service is also offered, which will detail how tanks may be delivered. Delivery and installation costs are usually quite modest in the low hundreds.

Yes – Landscape Tanks can form a wide variety of plumbing holes configurations to suit any design requirement. That is, they can be linked together to form any shape with massive storage capacity. See Configurations for further information.

The tanks are made from high grade 50mpa concrete it is possible to readily drill into the concrete to affix bolts for gates and steps as required.

The walls of the standard tank are around 100mm thick with the larger tank up to 130mm think and customers may dyna bolt into the tanks as required.

Tanks are also very heavy 2.5 tonnes and as such it is acceptable to swing gates and other structures from the tanks.

Please consult Landscape Tanks or your engineer for any structural requirements such as using the tanks to support carports and the like.

Landscape Tanks have many uses and all may be used at the one time as well.

It is quite amazing that a few Landscape Tanks can perform all the following functions collectively.

  • Water tanks.
  • Retaining walls.
  • Front or side fences.
  • Pool or courtyard surrounds.
  • Detention systems.
  • Water features and outdoor kitchens.
  • Fish ponds.
  • In gound seating for schools.

The list really is endless and up to your imagination.