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Discussion Starter · #1 ·
I'm about to rescape my tank and want to do a quality job with the substrate. I've got bags of ADA Amazonia (original) ready to go but was considering what to put under them. I've got access to pumice, but was wondering about adding supplements to it to make something similar to a DIY powersand. Does anyone have any comments on adding things like KNO3, KH2PO4, K2SO4, iron and trace elements to a pumice layer? What about Mg and Ca? I've also got access to plenty of worm castings and iron rich clay.
 

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I definitely wouldn't add any macronutrient salts directly into the substrate/underlying substrate.

I believe some like using Osmocote, so you could look into that
 

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Discussion Starter · #3 ·
I definitely wouldn't add any macronutrient salts directly into the substrate/underlying substrate.

I believe some like using Osmocote, so you could look into that
Is this just because of leaching and Osmocote being slow release?
 

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Is this just because of leaching and Osmocote being slow release?
Adding the macronutrients into the substrate will mean that once the substrate is wet, they will just dissolve and go right into your water column
 
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