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Drop Checkers - How They Work

Discussion in 'Lighting, CO2, Ferts & Flow' started by aaronnorth, Jan 2, 2009.

  1. keenonfish

    keenonfish Member

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    Hey thanks for the post this should be pinned! I am tempted to make my own 4dkh but couple of questions... Where do I get DeIonised water from (ironing / car battery water?) and I assume the stuff doesn't deteriorate over time?
     
  2. Truck

    Truck UKAPS

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    halfords, you normally use it for car batteries
     
  3. keenonfish

    keenonfish Member

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    ok thanks I thought as much but thought I would check. So the mixture should last then?
     
  4. Truck

    Truck UKAPS

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    im not sure

    i would have thought so
     
  5. SuperColey1

    SuperColey1 Planted Section

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    As long as the bottle is closed then it will only deteriorate minimally so not enough to worry about.

    DI water is readily available at Halfords, Wilko, Boyes etc

    AC
     
  6. Fowlersrs

    Fowlersrs Member

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    And I take it u can use regular bicarbonate of soda for the other part of the mixture, as in the stuff used in the kitchen?

    :good:
     
  7. SuperColey1

    SuperColey1 Planted Section

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    Bicarbinate of Soda - yes. Baking powder - No.

    6g Bicarb + 5litres DI = 40dKH
    10ml 40dKH + 90ml DI = 4dKH

    AC
     
  8. keenonfish

    keenonfish Member

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    Ta mate got some from Halfords today. Also got a drop checker on the way so I will be able to mess around in my small tank for now :)
    What accuracy do my measurements have to be? I have some digi scales accurate to 1/10 gram (10 x 2p coins measure 71.2g so seem pretty accurate!) but also should I remeasure the Halfords 5ltr tub or shoulds that be accurate enough?

    Olly.
     
  9. aaronnorth

    aaronnorth www.ukaps.org

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    scales should be accurate to 0.1g

    plenty ae available on ebay for around £6 if anybody needs one.
     
  10. tunerhead24

    tunerhead24 Member

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    Hey can I use the low ph test liguid from my API kit as bromothymol blue or is it the same thing?
     
  11. aaronnorth

    aaronnorth www.ukaps.org

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    any low range ph test kit will do (6 - 7.6)
     
  12. tunerhead24

    tunerhead24 Member

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    The drop checker I bought says to use 7 drops of there liguid and 5 ml of 4 dkh but is yours way better? And not to be complaining but why hasn't this guide been pinned??
     
  13. SuperColey1

    SuperColey1 Planted Section

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    4dKH with 2 Ph drops will give an easier colour to read try both if you have both and see which suits you if there reagent is bromo blue based;)

    Its not pinned at the mo because there would end up being 2 pages of pinned thread. lol There are a lot of good threads on here that are very pinworthy but unfortunately space is limited :(

    AC
     
  14. tunerhead24

    tunerhead24 Member

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    Well I don't even know what solution it came with, I'm gonna try the api low ph and I'll see what happens, thanks guys!
     
  15. aaronnorth

    aaronnorth www.ukaps.org

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    More bromothymol you add, the darker the colour.

    Personall y i tink htere should be a new section where all pinned threads (or extras) are moved too.
     

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