Black Mountain Seiryu is the darker cousin of the well known Seiryu stone. We personally like the darker grey, almost blueish tone that it has compared to regular light grey Seiryu. The craggy texture and endless details in these stones allow you to easily create a natural looking aquascape.
Seiryu may slightly raise pH and water hardness. Controsoil can help balance that out.
Pieces from packages will range from 3-15 inches. If you have any special requests for sizes, please make a note when ordering and we will try to accommodate according to inventory.
2lbs is roughly one or two stones that range from 3-5 inches each
*Stones require rinsing prior to use