Rain Water

Discussion in 'Beginner Discussions' started by Storm, 18 Apr 2008.

  1. Storm

    Storm

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    Im curious, can a person top-up there tank with pure/clean rain water?
     
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  3. lappiesreef

    lappiesreef

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    I woudn't. Not in a city area anyway. Rain water is very acid and absorbs allot of the carbon emmisssions in city areas.
     
  4. Storm

    Storm Thread Starter

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    Alright thanks, was wondering why nobody tops up with Rain Water. But for someone like me who lives outside the city?
     
  5. lappiesreef

    lappiesreef

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    Perhaps. But I would still purify it first. Maybe run it over snd column followed by activated carbon.

    I woudn't take too mnay chances with the in-put water. From most of the go wrong threads on here it is the input water...

    I think rain water can also absorb allot of phosphates especially in farm areas. If I remeber corretcly it had somethign to do with lightning as well...
     
  6. Storm

    Storm Thread Starter

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    k never mind ile just stick to NSW :)
     
  7. 459b

    459b Moderator MASA Contributor

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    it also depends how you collect your rain water. If you collect runoff from your roof, then (depending what roof you have) you could pick up alot of contaminants.
     
  8. lappiesreef

    lappiesreef

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    You lucky guys next to the cost ;) I would stick to NSW if I were you...
     
  9. 459b

    459b Moderator MASA Contributor

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    dont worry lappiesreef, we thankful everyday that we live at the coast! couldn't imagine living in gauteng again
     
  10. lappiesreef

    lappiesreef

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    Im green with jelousy....We have to sit in trafic and make up our own water :(

    Thats why I wanted a bit of the see in my house ;)
     
  11. Andreas

    Andreas

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    then think of us who have to scrape all our cents together just to buy some equipment
     
  12. lappiesreef

    lappiesreef

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    I'm one of those to boot :( student...
     
  13. Warr7207

    Warr7207

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    check the tds of the rain water if its lower than 5 you can use it. last time i tested joburg rainwater came in at 52.
     
  14. Alan

    Alan Admin MASA Contributor

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    Hopefully this is for water changes and not top ups?
     
  15. Storm

    Storm Thread Starter

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    Yup, i cant do Top-Ups so every few weeks or so i gotta do a water change with NSW. And no ways am i using tap water for a top-up.
     
  16. Tom

    Tom

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    Hi Storm.
    If you top up with NSW your sg is going to increase, you need to top up evaporated water with ro water.

    The rain water will also have a lot of bird *##t in. ;)
     
  17. Alan

    Alan Admin MASA Contributor

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    Yip your salinity is going to go through the roof, rather take the chance and top up with rain water than sea water. Topping up with sea water will definitely lead to disaster.
     
  18. Tom

    Tom

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    If you install a pump to lift the pressure of the rain water to.. (3bar?) you can push it through a RO unit. That should be ok, keep the waste for the lawn. :)
     
  19. Storm

    Storm Thread Starter

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    mmm i think you people misunderstood. I CANT do top-ups (meaning i don't do them at all). I only do water changes every few weeks with NSW.
     
  20. Tom

    Tom

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    A Bit of water evaporates from the tank every day. This causes the Specific Gravity to rise thus, the water becomes more salty because the salt to water ratio is more concentrated.

    To stop the SG from fluctuating, many reefers have auto top up system. This feeds Reverse Osmosis water into the system. Stabilizing the SG. If you top up the "lost" water with nsw (Ie. fill the tank when you do water changes) , then the SG will keep on rising.
     
  21. viper357

    viper357 Admin MASA Contributor

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    Why can't you do top ups?
     
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