The Planted Tank Forum - View Single Post - Peat with Leonardite
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Old 03-16-2004, 01:30 PM   #4
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Diamond Black, leonardite and lignite are similar. See:

I'm planning on using Peat and Diamond Black as organic substrate additives in conjunction with mulm. The exact amounts are not yet defined, but they will go under Eco-Complete topped with Onyx Sand as Eco-Complete seems to be on the light (weight) side.
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