I made about 20lbs of agrocrete last June, I made some with interesting shapes, some with pvc tubes through it, and some with pasta shells to create voids. I put the pieces in toilet fresh water tank so that each time the toilet flushed my rock got a water chage. I didn't notice any leaching once put into the tank.
Joe
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210 Gallon slowly gaining population.
Foxface, Naso, Coral Beauty, 2 Clowns, 2 Chromis, Orange Anthias, and Striped Goby.
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