🌟 Dive into Excellence with BLUE TREASURE! Keep your aquatic life thriving with optimal pH maintenance. Sourced from pristine environments for a cleaner ecosystem. Enough substrate to create a stunning underwater landscape. Porous grains enhance filtration and promote healthy habitats. Elevate your marine environment with premium coral sand. 0.5-1.5mm grain size 5kg pack USA made BLUE TREASURE Premium Coral Marine Aquarium Substrate Sand is a high-quality, eco-friendly substrate designed for marine aquariums. With a grain size of 0.5-1.5 mm, this 5kg pack is sourced from pristine environments in the USA, ensuring a natural pH balance and optimal conditions for your aquatic life.