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What is the purpose of adding peat moss as a first layer?

1K views 1 reply 2 participants last post by  hoppycalif 
#1 ·
What is the purpose of adding peat moss as a first layer? I ahve seen the suggestions but no reason why?
 
#2 ·
I believe the object is to get a low pH under the substrate, which is favorable to starting colonies of bacteria which make iron and other nutrients more available to the plant roots. The amount recommended is a dusting of the tank bottom that you can still see through.
 
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