It is base rock, dead coral, no colour it is white, but it will grow coraline algae if you keep it under actinic light for a month. Get some live rock and lots of base rock, King Ed Pets.. .Kingsway and Edmonds in Burnaby.
If you don't keep it under actinic light it will just grow algae, not a biggie if you just want colour.
Does it compare to Fuji rock? no not at all, but it is a good substitute and it works well for filling in and fragging corals onto.
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