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A lot of people just carefully stack their rock. I am one of those normally. Others will drill the rock and run acrylic rods or plastic coat hangers into the holes to stabilize it.
You can either stack the rock in the center or against the back glass. Both have worked for me. A tank that is deeper front to back will make keeping it in the center easier.
You can either stack the rock in the center or against the back glass. Both have worked for me. A tank that is deeper front to back will make keeping it in the center easier.
