Palossand シロデスナ Aquarium Rock

Material Selection: Choose a fish-safe, non-toxic 3D printing material that won't alter the aquarium's chemistry, such as certain types of PLA or aquarium-safe resin.

Printing: Use a 3D printer to create the rock, ensuring that the print is solid enough to sink and not have loose particles that could contaminate the water.

Post-Processing: Smooth out the print to remove any printing lines or roughness, which might be harmful to the fish. This might involve sanding and possibly sealing the print with a fish-safe sealant.

Curing and Leaching: Cure the model thoroughly to ensure all residues are gone. It may be necessary to leach the model in water to remove any possible soluble contaminants and to ensure it doesn't affect the water's pH.

Aquascaping: Introduce the 3D-printed rock into the aquarium, positioning it in a way that complements the overall aquascape and provides an interesting visual focal point as well as hiding places for the fish.

Maintenance: Regularly check the structure for integrity, ensuring it remains safe for the aquarium inhabitants. Over time, the rock may develop a biofilm that can add to its natural appearance.