Shells Instead Of Stones In Terrariums - Knowledgebase Question

Name: Lynda Tomlinson
Trevose, PA
Question by starsnmoongl
April 19, 2000
May I use shells instead of stones for the first layer of my terrarium? I love the beach and have collected many very pretty pieces of shells but am not sure if this would be harmful.

Answer from NGA
April 19, 2000


I think it would be alright; my only concern would be that over time the leaching from the shells might affect the soil pH slightly, tending to shift it toward the alkaline side. However, you will be repotting or refreshing the soil periodically so I doubt that would become a prblem in your terrarium.

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