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  1. #1
    Join Date
    Sep 2004
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    Dardanup W.A.
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    240

    Default Water tanks 23kl

    Looking at installing another rainwater tank so we can put the entire house on rainwater instead of just drinking and cooking.
    Have to decide between the only two affordable options that don't involve liners, which is corrugated aquaplate and poly.
    The existing tank is aquaplate and it has served us well for 15 years and doesn't seem to have deteriorated in that time, but they are significantly more expensive than poly, but still within budget.
    We have no experience with poly, so if anyone does have experience, especially long term experience with poly, we would love to hear from you, good or bad experience.
    Cheers )

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  3. #2
    Join Date
    Apr 2014
    Location
    Little River
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    Default

    I have factory made concrete, cast on site concrete and poly tanks in around the 30kl size. If I was to get any new tanks they would all be poly as over the last 25 years the concrete ones have either failed or are starting to show signs of leaks.

    The poly tanks are not quite that old but they have performed perfectly and are showing no signs of age. All of my cold water plumbing is poly and that gives some troubles but only where it is exposed to the cattle.

  4. #3
    Join Date
    Sep 2004
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    Dardanup W.A.
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    Default

    Thanks for that info. Concrete is not an option here, it is too expensive, and I know that they are problematic.
    I really just wanted to hear if anyone had issues with poly tanks that they have had for a long time, and it seems that there have been none, so I might just go with poly and save a grand ;-)
    Cheers )

  5. #4
    Join Date
    Nov 2006
    Location
    Bendigo Victoria
    Age
    76
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    Default

    We have 2 x 20,000l poly (Polymasta brand) that have served us well for the past 16 years and I can see them go on for at least another 16 years.

  6. #5
    Join Date
    Dec 2010
    Location
    Mornington Peninsula
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    Default

    In a bushfire, how would poly perform?

    This is one of the prime reasons that we went for concrete.

  7. #6
    Join Date
    Sep 2003
    Posts
    165

    Default

    Another option is the likes of a Rhino Tank, Coro Tin Can "shell" with a polly liner. When we finally get to build our acreage house we will be using Rhino Tanks.
    It's Ripping Time!!!

  8. #7
    Join Date
    Sep 2004
    Location
    Dardanup W.A.
    Age
    68
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    240

    Default

    Too many of those fail from condensation causing corrosion of various parts in the roof/truss sections.
    Next door neighbours roof fell in last year.
    It is all very well using galv parts, and galv screws, but where the screws penetrate the galv steel, and where two bits of galv steel overlap, rust begins apparently.

  9. #8
    Join Date
    Aug 2011
    Location
    bilpin
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    2,821

    Default

    The only down side with poly is fire. Other than that, they perform well. Easy to shift and transport. The life can be extended by placing them out of direct sunlight.

  10. #9
    Join Date
    Sep 2004
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    Dardanup W.A.
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    Default

    Rustynail, I am thinking of wrapping it in shade cloth and using Band-it strapping to hold it in place.

    With regard to fire, it seems that the Aquaplate tanks are coated on the inside with a polyethelene coating that burns/melts to the water line in a fire, so stuffed afterwards anyway.
    That makes it a bit easier to go towards poly.

  11. #10
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    Nov 2006
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    Bendigo Victoria
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    When you look at photos taken after a bushfire the corrugated iron/acqua plate ones don't survive too well either, all buckled and ready for scrap.

    But yes, the plastic ones look sad too, everything above the water line melted away, but where the water is the rest of the tank still there.

  12. #11
    Join Date
    Sep 2004
    Location
    Dardanup W.A.
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    68
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    Default

    It just got almost certain for the poly.
    Just found a 32kl for $3300 delivered, which is a great price for W.A. Not the colour I wanted, but if I wrap it in green shade cloth it will be the right colour ;-)

  13. #12
    Join Date
    May 2012
    Location
    arthurs creek
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    24

    Default

    Poly tanks, concrete tanks,corri tanks. All are equal in respect to fire. Concrete spalls ,plastic melts and tin buckles. Seen it first hand on black Saturday. Nothing is impervious to fire

  14. #13
    Join Date
    Aug 2011
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    bilpin
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    When it comes to direct, prolonged exposure to fire, all tanks are at risk. Unfortunately, poly even more so as flying embers alone can hole a plastic tank.

  15. #14
    Join Date
    Oct 2008
    Location
    Adelaide, SA
    Posts
    3

  16. #15
    Join Date
    Dec 2003
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    lower eyre peninsular
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    Default

    Haven't done this myself yet, but..... maybe talk with your insurance company about replacement value in the possibility of fire damage.
    Life expectancy would grow by leaps and bounds if green vegetables smelled as good as bacon.

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