Sumatra driftwood is another fantastic natural product that really does help to create your perfect natural aquarium settingr sumatra driftwood has a natural dark colouring features a thick trunk and small branches that branch from this main trunk r approximately 30cm in sizer please rinse gently with cold water before use to remove any dust or particles no need for chemical cleaning or use of abrasive sponges to cleanr aquarium enviroment should always be stabilised before introducing fish