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Diamond Black: Liquid or Granular?

2202 Views 5 Replies 4 Participants Last post by  Deepshanks
I read that including diamond black leonardite underneath eco-complete is a good sustrate for planted tanks. However, I also found someone who said they added liquid leonardite and has serious problems with brown water.

Is the Diamond Black they sell on amazon.com liquid or granular? On the one hand, they say that "Diamond Black is significant because it is the only granular leonardite that has been proven soluble during a single season." But on the bottle, it says "Liquid humic acids"

Will this stuff turn my tank water brown?
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