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  1. #1
    Junior Member
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    Feb 2005
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    Estimated evaporation rate

    What kind of daily evaporation rates are people seeing. I'm designing a small RO/DI water resevoir and I want to know about what size to make it as the space available is alittle thight.

    The tank is going to be 120 g.

    Thanks for any help.

    Craig
    120 gal in progress --- Stand is 75% built.

  2. #2
    Senior Member
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    Feb 2004
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    With MH lighting, 120g tank and 40g sump/fuge, I loose about 2 gallons a day.

  3. #3
    Senior Member aragorn69's Avatar
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    Aug 2004
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    206
    my 65G needs about 2G every 3 days.
    Adam

    __________________________
    A Black Hole Is Were God Divided By Zero!

  4. #4
    Senior Member
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    Dec 2004
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    My 90G with 33G sump/refug goes through 2 gallons every 2-3 days. Alot of it depends on various living conditions and location of your tank. ie. whether it is in front of a window or if its near a drafty location. I would say have at least a 2G resevoir that uses float switches and control valves to control the water going in and coming out of the resevoir.
    You do not want to have an uncontrolled feed to your resevoir you will have a flood!

  5. #5
    Junior Member
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    Feb 2005
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    Thanks a lot everyone. The resevoir I designed holds 7 gallons and will feed a float valve in the sump.

    I feel better as I had no feel on how much water I would need.
    120 gal in progress --- Stand is 75% built.

  6. #6
    Moderator ShipWreck's Avatar
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    Oct 2004
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    Through the winter I was going through about 5 gallons per day. No MH's and total water about 150g.
    Rob
    -----
    Upgrade in the works! Keep looking for an update.


  7. #7
    Senior Member
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    Apr 2003
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    6,370
    you'd better get a larger holding tank. 25g minimum. Its apperently better to run your RO/DI longer than shorter plus its pretty easy to forget to fill it. what happens if you go on a weekend trip? You could use a solonoid and be fully automated. Its not unheard of to lose 3 gallons on a tank your size on a dry day.

  8. #8
    Junior Member
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    Feb 2005
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    Johnny Rock,

    There isn't enough room for 25g, so I'm putting a high and low float switch in the resevoir and will be running the RO/DI with a solenoid.

    Craig
    120 gal in progress --- Stand is 75% built.

  9. #9
    Senior Member
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    Apr 2003
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    6,370

    Cool

    can you set the distance of those switches?? its just not good to have the RO/DI cycling off and on frequently. I'm allfor automating myself.

  10. #10
    Senior Member
    Join Date
    Dec 2003
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    870
    install a resevoir in line with your float valve and ro/di unit

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