Lets talk about Rock Dusts

  • Thread starter ezenzyme
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ezenzyme

ezenzyme

Whos got the know? Most of you use some kind of rock dust, glacial rock dust, volcanic dust, greensand, azomite, lime; hydrated, fine, dolomoite, calicum carbonate, rock phosphate, to name a a few. Chime on in here! Who uses what for what applications? Who knows the science behind it?
 
BillFarthing

BillFarthing

I would stay away from azomite from the aluminum and heavy metals. Add a high quality fulvic to remediate pH, or any metal content from rock dusts.

Tom at Rock Dust Local is an excellent resource on rock dusts.
 
growsince79

growsince79

I used to run hydro in 100% lava rock. Plants grow good but cleaning them sucks
 
ezenzyme

ezenzyme

Lava rock, interesting. You ever try puttin em in Peroxide? I used lava rock this year smashed three yards by hand, and mixed the dust in. Lava rock is basalt, its pumice the beginning of pearlite, also interestingly enough a lot of silica your average basalt has 45-50% silica. I also use the montana silica thats harvested from volcanic duff. Wonder about the break down time, on the siliica and also all the metals and everything else
 
BillFarthing

BillFarthing

What kinda fulvic you talking? How do you distinguish from low quality?
Rock Dust Local has an awesome fulvic with OMRI-listed amino and organic acids.

I would stay away from anything that is extracted from Leonardite because it requires chemical hydroxide extraction, and is mostly inactive ash content for your money. Leonardite based humic/fulvic can also throw off calcium absorption with the extra potassium content.
 
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