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  1. petterb1

    Dsb ????

    Very fine it is used for sandblasting. Chem. makeup all it say is soda lime glassbeads.
  2. petterb1

    Dsb ????

    Could one use soda lime galssbeads used for samdblastting for a sandbead
  3. petterb1

    Lightting

    Could one use a GE metal halide 400w bulb MVR400/U with a M59 balast on a reef aquarium.
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