dirted tank underlayer? - The Planted Tank Forum
 
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post #1 of 3 (permalink) Old 11-21-2015, 12:48 AM Thread Starter
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dirted tank underlayer?

I'm in process of mineralizing my soil for my first dirted tank and have 2 options, on hand, for the very bottom thin layer.

1)- sprinkle some dry ferts csm+b

OR

2)- sprinkle some Muraite of Potash along with some Dolomite powder.

I have all this on hand, but not sure which is better.

Any suggestions are appreciated!
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post #2 of 3 (permalink) Old 11-21-2015, 07:40 PM
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Dolomite is a good additive under the substrate because it supplies magnesium, which can be missing from tap water, and it only slowly dissolves in water. I'm not sure there is any benefit to the KCl addition, since it rapidly dissolves and migrates throughout the substrate and the tank water. I wouldn't use the KNO3/KH2PO4/CSM+B combination as a layer under a substrate because it also dissolves rapidly, and because the KH2PO4 would combine with the iron in the CSM and make it an extremely slow dissolving source of iron. I don't believe you really gain much of anything by putting nutrients under a mineralized Topsoil substrate, since it already contains most of the needed nutrients.

Hoppy
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post #3 of 3 (permalink) Old 11-21-2015, 09:11 PM Thread Starter
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Thank you for the response Hoppy! Are there any other inexpensive "toppers" aside from sand to use? Kitty litter? Just wondering what my options are (visually speaking)
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