I have been redoing my 12 long, including removing, rinsing, and drying AS. This one is 2yo original Africana 'sand' that started breaking apart into dust about 6 months ago.
Just tonight I put some of it into a bowl and flooded. I am still getting a lot of dust, to the point where I just capped it with some baked clay. The dust does not stay in the water column, it eventually settles on the bottom. But even looking at the substrate creates a nuclear cloud.
Did not do any measurements, but guessing that I am down 20% by volume.
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Courtesy * Integrity * Perseverance * Indominable Spirit * and Self Control
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