Calcium Gluconate and Magnesium Chloride?

Discussion in 'Planted Tank Equipment' started by neilh, Jun 1, 2009.

  1. neilh
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    neilh Algae harvester

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    Anybody used either of these to for their micro nutrient dosing? Our local Dischem was extremely full, so finding Lenolax was a problem. Ended up getting Nature's Choice Calcium Gluconate and Magnesium Chloride
     
  2. wearsbunnyslippers
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    wearsbunnyslippers Administrator Staff Member

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    Hey neil,

    I am using seachem equilibrium for calcium and magnesium...
     
  3. neilh
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    neilh Algae harvester

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    Wanted to try the PMDD route rather, which was a bit of a non-event as the Calcium was around 80 bucks

    Otherwise Equilibrium it will be
     
  4. neilh
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    neilh Algae harvester

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    Reading up, it looks like chloride is a very bad idea for a planted tank

    Guess I'll be going for the equilibrium/Trelmix combo
     
  5. Pikkie
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    Pikkie Algae harvester

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    Hey Neil why don't you use Magnesium Sulfate?
     
  6. neilh
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    neilh Algae harvester

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    Epsom salts?

    Was a blonde moment and I completely forgot about it :eek:

    And Calcium? Plaster of Paris?
     
  7. Pikkie
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    Pikkie Algae harvester

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    Yes Plaster of Paris is CaSO4. So you can dose that for calcium. ;)
     
  8. Andre
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    Andre Green fingers

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    As far as I know you can also use crushed coral, aragonite or normal seashells to add calcium to your tank. They are all basically Calcium Carbonate and will slowly dissolve and also help to buffer your pH against swings, especially if you add CO2.
     
  9. DeeJay
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    DeeJay Noob

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    My wife and I crushed an Calcium Magnesium vitamin supplement and tossed some in our little "experimental tank". We were looking for ways to increase our water hardness safely, amongst other things, and we had some old expired tablets. They consist of oyster shell (calcium carbonate) and magnesium carbonate. It's safe to eat, and in a highly absorbable form. But, they're not what I'd call a economical long term solution, though. It worked; we just haven't got any fish or plants in that tank...!

    Another idea I've been entertaining is using rocks containing dolomite. Dolomite rock or dolostone contains mostly calcium magnesium carbonate { CaMg(CO3)2 } which should provide the same buffering benefits Andre mentions, but should add both calcium and magnesium to the tank. Certain types of marble are made from this and should provide a slower release than the usual sedimentary version. Not all marble though; most marble is just calcium carbonate. (Good luck finding the dolomite types of marble.) We use 'nomal' marble chips in our main tank, and it works well in the current setup. Dolomite is mentioned elsewhere on the forum.

    What about 'Dirk se drupples'? This has a hardening mix with it, which will add calcium and magnesium in the right amounts. We get some on Wednesday!

    David
     
  10. wearsbunnyslippers
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    wearsbunnyslippers Administrator Staff Member

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    you can buy lime from most nurseries - it is dolomitic lime
     

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