Brand New ZOO MED/AQUATROL, INC - MOPANI WOOD DECOR LARGE 16-18" "AQUATIC PRODUCTS - AQUATICS - ORNAMENTS/DECOR" A beautiful two color African hardwood for aquariums or terrariums.Smooth surface, textured detail, and unique mottled color adds interest and enrichment to habitats.Use with plants to create the "naturalistic" look.One of the hardest and densest woods available; sinks immediately in aquariums and unlike driftwood, will not rot!Mopani Wood has been sandblasted clean and is ready to be added to your terrarium.For use in aquariums, remember all natural wood leaches tannins, which discolor water and reduce pH levels. To minimize this effect, soak wood in a separate container, and change water daily to remove excess tannins. The wood will be ready when the water color goes from dark brown to a very light.