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Question for KAREN RANDALL
On Nov 6 1996 you wrote,
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Magnesium Supplementation
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•To: Aquatic-Plants at actwin_com •Subject: Magnesium Supplementation •From:
krandall at world_std.com (Karen A Randall) •Date: Wed, 6 Nov 1996 21:28:57 -0500
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Subject: Magnesium Supplementation
> Another nutrient to seriously consider is magnesium. Magnesium
> also causes older leaves to die back. Typically, they lose chlo
> become yellow before dying. Often the edges and end of the leaf
> yellow and start to die while the midrib is still green. Magnes
> deficiency has not been considered very much, but it could be mo
> prevalent than most aquatic plant people think. If you come fro
> dolomite limestone region, the water will have both calcium and
> hardness, but if you come from a soft water region, the municipa
> system may add some lime to the water to give you moderately har
> but that water will have very little magnesium. Fishfood is not
> supplier of magnesium, either. MgSO4 is easy to get.
I've had this problem before. It looks like the plants are iron
deficient when I know there's plenty of iron present. When I add
magnesium (I've just used Epsom Salts... is ther any problem with
this?) everything has greened right up.
BTW, I think I overdosed my tank the last time I did this... some
plants showed no negative reaction, but I lost almost all my H.
difformis within the next week or so, and some of the other stem
plants took a bit of a hit too. The rosette plants, OTOH, look
better than ever.
Karen Randall
Aquatic Gardeners Assoc.
Boston, MA
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Is it possible to overdose your tank with Magnesium Sulfate?
I recently started using distilled water for water changes and now I have to
add the Calcium
and Magnesium back to the water. I use Calcium Carbonate (Sundown Vitamins)
for
Ca and MgSO4 for the Mg. George Booth uses the caco3 (not sure of his
source) and epson salts for the Mg at a 3:1 ratio. (75 ppm Ca : 25ppm Mg)
You said you lost a few plants and you think you may have overdosed your
tank with
MgSO4. Was this the case? I do know that MgSO4 will raise your Sulfur levels
more
than anything else. Should I use Magnesium Carbonate instead?
Now, back to the CaCO3: The vitamins I am using for Ca also contain Vitamin
D.
Is there any problem with this? I am not sure exactly what vitamin D is or
what affect it
would have on my plants. ( Or my filamentous green algae that is taking over
the tank)
Thanks,
Andrew