Missing Calcium? - The Planted Tank Forum
 
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post #1 of 8 (permalink) Old 06-01-2011, 04:34 AM Thread Starter
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Missing Calcium?

I'm planning on buying this: http://www.greenleafaquariums.com/aq...rtilizers.html

I found an analysis of Plantex CSM+B on another thread:
Regular CSM / CSM+B
Fe 7.0% 6.53%
Mn 2.0% 1.87%
Mg 1.5% 1.40%
Zn 0.4% 0.37%
Cu 0.1% 0.09%
Mo 0.05% 0.05%
B 0% 1.18%

I noticed that it's lacking calcium. Don't plants need calcium? Do I need to dose it?
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post #2 of 8 (permalink) Old 06-01-2011, 05:11 AM
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You probably do not need to dose it. No, the CSM+B does not have calcium, but the calcium is plentiful in the tap water for most US residents. Yes, plants do use calcium, but it's only a trace element used by plants and they use very little daily.

edit: If you want to though, you can forego K2SO4 and get GH booster instead. That will dose Ca and Mg as well as potassium, and is what most EI users do nowadays, I believe.
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post #3 of 8 (permalink) Old 06-01-2011, 07:52 AM Thread Starter
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No, the CSM+B does not have calcium, but the calcium is plentiful in the tap water for most US residents.
I have well water that is generally soft.

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If you want to though, you can forego K2SO4 and get GH booster instead. That will dose Ca and Mg as well as potassium, and is what most EI users do nowadays, I believe.
That might work but I'm purchasing a set so all the stuff comes with and so I may as well use it as a set instead of buying additional things.

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post #4 of 8 (permalink) Old 06-01-2011, 06:28 PM
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Estimative Index, see the sticky at the top of this sub forum.
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post #5 of 8 (permalink) Old 06-01-2011, 09:08 PM
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Well water that is soft? You've tested it? Most people talk about how hard their well water is. Mine is pretty hard.

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post #6 of 8 (permalink) Old 06-03-2011, 01:37 AM
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I have well water that is soft and supposedly lacks calcium too, I dose liquid calcium designed for reefs dont know if its a good idea but I need to do something about this deficency..

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post #7 of 8 (permalink) Old 06-03-2011, 02:11 AM
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Even with soft water you most likely get enough calcium from the tap, we have well water with a softner and my dkH 5.6 and a dgH of 2.8 my fresh water clams and snails never had any problems and my plants do well. My biggest problem is silicates in the water.


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post #8 of 8 (permalink) Old 06-03-2011, 02:38 AM
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What is the GH of the well water?
GH is a test of Ca and Mg, so it is not definitive, but if it is over 3 degrees, then there are probably both Ca and Mg in the water.
You can also get Ca test separately. If the GH is under 3 degrees I would use Seachem Equilibrium as a source of Ca and Mg. It also has a lot of K, and very small amounts of other minerals.

Yes, plants will die without Ca, so make sure you have some. Most aquarium keepers aim for roughly 4 parts Ca to 1 part Mg, though plants are not too particular.
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