ok substrate test inprogress.
Sounds like the dolomite is about equivalent to the sugar sand but has some better qualities, and seems perfectly safe with livestock as Victor has had it in his tank for a while now.
With that in mind I'm off to Crappy Tire tomorrow to spend some of that Crappy Tire money I've been accumulating! [img]images/smiles/icon_biggrin.gif[/img]
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