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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book.

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    • CommentAuthorRex
    • CommentTimeFeb 27th 2020
     
    What ho one and all,

    We collect the rainwater in a 6000 litre tank in the garden, from where it is pumped to a regular loft tank to gravity feed the toilets for flushing.

    Because the water is collected from the roof, there is inevitably, quite a lot of bits and bobs, most of which settle in the garden tank but sufficient does make its way to the cisterns. Not enough to be a problem but the inside of the cisterns do look grubby. I take a paintbrush, swirl the sediment around and flush it away. It more or less rejuvenates the cistern.

    A few years ago, I flushed the 6k tank with a small submersible pump to remove X amount of sediment.

    But the loft tank is probably rather 'grubby' and I am not sure the best way to clean it out. when empty, there is around 70mm of water in the bottom but since the tank is on the loft floor, there is insufficient height to syphon the sediment out. In any case, i don't really want to be slurping buckets of water down the loft ladder and to the front door!

    Any suggestions as to the best way forward would be appreciated.

    Thanks and toodle pip

    Rex
    • CommentAuthorgoodevans
    • CommentTimeFeb 27th 2020
     
    Can you not get a long hose and syphon it out all the way outside.

    Get a garden hose, fill it with water, bung off both ends, leave one end outside, drag the other end end into the loft and under the water level and remove the bung. un-bung the bottom end and syphon/hover up the water and sediment.

    The hosepipe can take any route you like up, down, roller coaster, as long as the bottom end is below the tank.
  1.  
    Wedge the toilet flush valve open, so there's a good gush of water through the cistern and down the pan. Stir up the loft tank with a scrubbing brush.

    If the fill (float) valve has a strainer in it, you might want to remove the whole valve to avoid gunging it up, throttle the isolation valve a bit.
  2.  
    Wot goodevans said +1 although it would probably be enough to take it to the bathroom to run the syphon outflow down the WC if that is easier/closer
    • CommentAuthorRex
    • CommentTimeFeb 27th 2020
     
    Gentlemen,

    Thanks for the suggestions. Had not considered a hose out the window but I think that would work. Hose to bathroom is not an option as the hose would snake around the house.

    Stirring the sediment to flush though is what I do for the cisterns, but as the fill valve is of the slow, silent type, I don't think that will get the sediment away.

    Hose / syphon is definitely the way to go.

    Thanks and toodle pip
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