The Secret to How to Build a Terrarium Using a Repurposed Fish Tank — Cleaning, Sealing and Substrate Setup
My first fish-tank terrarium fogged up like a bathroom mirror and smelled like a swamp within a week. I had cleaned the glass, but not in the right order, and I skipped a proper drainage layer. Once I fixed my prep and substrate, the next build ran clean for over a year with only light…









