DIY Sump Top-Up

Discussion in 'General Discussions and Advice' started by costa, 20 Nov 2009.

  1. costa

    costa

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    Hi Hennie!

    I need some advice on how to build an effective, yet reasonably cost efficient, DIY sump top-up device.

    The commercial models out there are around R 600 a piece & I cannot afford one
    at this moment.

    I am going on a business trip for about a week & I am worried about the amount of
    water that is going to be lost due to evaporation.

    Cheers,
    Costa.
     
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  3. chikaboo

    chikaboo

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    Hey costa take a look at mine - cost me about R150 total I think [​IMG]
     
  4. Reef Maniac

    Reef Maniac MASA Contributor

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    Hi Costa,

    You can do what I have done on my own tank: install a plastic float valve (such as those used in toilet cisterns, or better, one which you can buy from the Water Boy), connected directly to your RO filter. I have been using one for many years now, and it works well. Place the float valve in the sump return-pump compartment, as that is where the water level change takes place when water evaporates from the tank.

    Here are a few photos of my previous (toilet type) float valve, before I upgraded to the Water Boy valve, which is about 40% of the size, and more reliable, IMHO:

    Sump, showing float valve in right-most compartment, next to Berlin skimmer:

    [​IMG]

    close-up of float valve, and DIY Perspex bracket to mount in on the glass partition between the two chambers (not taken at the same time as the other two photos...):

    [​IMG]

    Side view of float valve:
    [​IMG]

    Hope this helps - just ask if anything is still unclear...

    Hennie
     
  5. costa

    costa Thread Starter

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    Thanks guys!

    I will source the components this weekend.

    How much did it cost you to set up your top-up system Hennie?

    Will keep you guys posted if I run into any trouble.

    Cheers.
     
  6. Reef Maniac

    Reef Maniac MASA Contributor

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    The float valve shown in the photos was about R85.00 at Berlesell (plumbing wholesaler in Bloemfontein...), and the bracket was made from a piece of Perspex off-cut. I also had to have an adapter made from nylon, to link the 6mm RO fitting to the 13mm float valve fitting - If I remember correctly, the engineering shop charged me R20.00 for that, but I supplied the piece of nylon (Vesconite will work even better, I think).

    The new Water Boy float valve I'm currently using cost about R125.00, if I remember correctly. You should be able to get something similar from suppliers of water coolers.

    Hennie
     
  7. Nemos Janitor

    Nemos Janitor

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    Aagh Hennie the engineering guy just loved your always happy helpful face :whistling:. 20 bucks really?:razz:
     
  8. lIghty

    lIghty

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    I see you even have some decend live stock in your sump.;)
     
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