Dymax Composeal Bonding Sponge is a non toxic; quick bonding compound that provides long lasting durable and waterproof bonding effect when Dymax Flora glue is added. This bonding compound is fully environmentally friendly and can be easily prepared for bonding woods and rocks commonly used for Aquascaping; Terrarium and Paludarium. Unlike using tissue paper with scaping glue as a conventional way of scaping Composeal comes with 3 natural colours which blend closely into any scaping materials without a need to do a cosmetic touch up after applying scaping glue. Used for filling gaps. Strong and durable. Provides a natural look. No cosmetic touch up required. Requires scaping glue to bond, Dymax Flora Glue sold separately.