To make the installation of our water storage tanks as easy and quick as possible we have included this step by step guide to help get you started.

Colour Range

slimlinetank colour chart















You will also be able to download a PDF installation sheet so you can take the information to the work area.

These instructions cover the recommended way to install the tanks using either a solid base or a free standing design.

1000 litre thintank

Slimline Tank Dimensions

Length: 2400 mm
Height: 1850 mm
Width:  260 mm
Capacity: 1000 Litres
Weight Empty: 75 KG

Make Sure You Have A Solid Base

It’s important for all the tanks to stand on a solid base, the reasoning behind this is so that they will not settle or move when the surrounding ground becomes wet from heavy rain or any other unforeseen circumstances.

The water tanks can be laid on sloping ground, along the length of the tank. Surface must be horizontal (LEVEL) across the width of the tank to allow the sides of the tank to be vertical.

Free Standing Installation

  1. Mark Position Of Support Poles And Excavate Holes for 65mm x 65mm x 2400mm Long Posts.
  2. When Digging The Holes Make Sure They Are A Minimum Of 300mm In Diameter And 600mm Deep.
  3. To Create Solid Base You Then Lay Concrete Pavers Between Holes.
  4. Position 100mm Sleeves And Concrete Around The Outside Of The Sleeves And Up To Paver.
  5. After Concrete Has Set, Position Tank On To The Pavers And Position The Posts.
  6. To Finish Off The Installation, Concrete Around Posts.

Caution: In step 2, the hole sizes recommended may not be large enough in sandy areas, if you are unsure  get advice from a local fencing contractor or a qualified civil engineer.

freestanding 1000 litre installation

Installation and Setup GuideDownload the PDF For The Free Standing And Wall Mounted Install Here.

Wall Mounted Installation

  1. On an existing pavement, sloping away from a fence or wall, the surface must be built up to ensure the tank face is vertical and the back of the tank is flush against the fence or wall.
  2. Position first tank on prepared base and fix to fence or wall using bracket WB01 each end. For multiple tanks use bracket WBD01 between tanks. Place brackets approximately 1400mm above base.
  3. Brackets are required to ensure tank(s) cannot be accidentally pulled over by human effort.

wall mounted

Installation and Setup GuideDownload the PDF For The Free Standing And Wall Mounted Install Here.

please call thintanks

WARRANTY: Thintanks warrants its tanks by a pro rata warranty for 10 years from the original date of purchase. This warranty covers the original purchaser only and is not transferable. Thintanks will repair or replace, at its descretion the tank affected by a defect caused by the manufacturing process or materials. Fading or colour change, damage caused by accidents or misuse, do-it-yourself repairs or incorrect installation, and any subsequent costs (including freight of replacement tank) are not covered by warranty.

If you have any further questions or concerns about how to install our Thintanks at your residential or business property please use the comment section below, you can also contact me directly via phone: 1300 885 547 or by submitting a message using our contact page.

  1. Joe

    I have just erected a garden shed with the intention of installing a 1000l Thintank down the end of it. However the height to the bottom of the gutter outlets is at 1855mm. Is there any way of adapting the tank entry point, even if it diminishes its capacity, to allow downpipe adaptors and pipes to enter the tank?
    Or if you know of any other tanks which are also roughly 300mm wide with less height?

    • Hi Joe
      Thank you for your enquiry.
      The inlet basket in the tank sits slightly lower than the full height of the tank however, there will not be enough room between the top of the basket and the bottom of your gutter outlet. The best option for the ThinTank in this situation is using an overflow position for the inlet. I have also replied to your email if you wish to discuss this further over the phone.
      Kind regards

  2. Larry Woods

    Tank is now in position. The 2 bottom outlets are sealed internally. Just push the seal into the tank with a punch or screwdriver? Is it safer to cap the unused outlet or is the seal sufficient?

    • Hi Larry,

      You will need to drill out the outlet that you choose to use. This can be done using a hole-saw.

      If you do not have a hole-saw, you can use a small drill bit and drill around the edge of the outlet until it pops out.

      The seal is the same thickness as the tank, so no plug would be required in the unused outlet.

      Kind Regards,

  3. Joachim Ruhnow

    Do you ship to Germany (Europe)?

    • Good Morning
      Please refer to the email i have sent you.
      Kind Regards

Comments are closed.