"John Savage" wrote in message
...

If you have a high house and want to raise the tank onto a stand, then
the stand is likely to cost more than the tank! But a high tank means
that you are not held hostage to a pressure pump for gardening, and a
reliable 240 supply during hosing down during bushfire weather. The
poly tanks are happy to sit on a bed of builder's sand (the stuff that
has clay in it, and sets like cement with time). Make sure that the
edges can't get eroded over the years, and protect the tank from
accidental scraping from passing tractors, etc.


I high tank that gives gravity flow is also limited in volume by the
distance from the roof to the stand.

Pressure pumps, while giving the convenience of mains pressure, have

Mains pressure will be a big expensive pump. Cheaper ones with less than
mains pressure are OK for the garden.

a sinister side: while you are at work they can completely empty your
tank, and if you are really unlucky, dump it all onto your bathroom
floor. An advantage of placing the pressure pump where you will hear
it in operation is so that in the middle of the night you can ask
yourself, "Why is that pump going?!" and in short time discover that
someone has left a garden tap turned on.


This is true. You must make sure your plumbing is good, especially polypipe
joints are not as reliable as metal. As well as wasting water and soaking
somewhere you don't want soaked a leak or tap left on may burn out the pump
motor if it runs dry. My garden tank is turned off at the valve and the
motor switched off when not in use for this reason.

David