ok substrate test inprogress.

[powerreef]

Its always good to have a test subject. [img]images/smiles/icon_biggrin.gif[/img]
I remember using dolomite back in the early days, but the most we had for corals then was some mushrooms and polups. Something you might want to do if you decide to keep it is to run a good magnet through it, at least that way you could get any stray metals that may be in it.

good luck steve I hope it works out.