Parameters Stable enough?

Discussion in 'Water Parameters and Additives' started by ChrisNell, 8 Sep 2011.

  1. ChrisNell

    ChrisNell

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    I started logging some parameters 2 months ago, on a weekly basis. Alk dosed with topup, rest on a daily basis. I adjust the weekly dosing based on the weekly measurements. Is this stable enough?? I see temp creeped up as summer starts.

    DatepHTempSalinityAlkalinityCalciumMagnesium24 July 20118.526.8378.6360105031 July 20118.425399.5380135007 August 20118.425.9357.7400123014 August 20118.427348.8380117021 August 20118.226.2358400128028 August 20118.326.9357.7400126004 September 20118.427.93574001270
     
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  3. ChrisNell

    ChrisNell Thread Starter

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    [​IMG]
     
  4. mariusmeyer

    mariusmeyer

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    I would try and keep the alkalinity more stable. A possible reason for the fluctuation would be the change in evaporation rate and this of course affects the amount of buffer being put in from the auto top up.
     
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  5. 459b

    459b Moderator MASA Contributor

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    Do you always measure the parameters at the same time of the day?
     
  6. ChrisNell

    ChrisNell Thread Starter

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    Yes, same day and same time - around 16:00 every Sunday.
     
  7. ChrisNell

    ChrisNell Thread Starter

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    I also seem to find it difficult to keep Magnesium up. Dosing four teaspoons of Epsom Salts on a daily basis for last 4 weeks.
     
  8. 459b

    459b Moderator MASA Contributor

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    What size tank do you have?
     
  9. ChrisNell

    ChrisNell Thread Starter

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    DT is 500l, sump 250l, running DSB, macro algae, BB3000 skimmer, vodka + special blend. Few smaller SPS's, lots of zoa's
     
  10. 459b

    459b Moderator MASA Contributor

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    Do you dose any other magnesium supplements?
    Epsom salts doesnt have that much magnesium in it (its mainly sulphate and water). You have to dose alot of it to substantially increase your magnesium levels.
    This should help : Reef Chemistry Calculator
     
  11. ChrisNell

    ChrisNell Thread Starter

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    Yes, I dosed the Brightwell product as well. Got the Mg jump from 1050 to 1350 using 500g of Epsoms.
     
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