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and BOD/DOC/TSS levels
Simple to use – just place on the water surface
converting them into biomass that can be easily removed through protein skimming
The depth of colour indicates the intensity of UV-B being emitted
Golden Tree Black Stone Gravel Size:Black Stone 9-12mm - 1Kg (20pcs) and BOD/DOC/TSS levelsGolden Tree Premium Natural Aquarium Substrates Golden Tree Natural Aquarium Sands and Gravels are carefully selected to provide beautiful, natural colours and textures for freshwater aquariums and aquascapes. Sourced from high quality natural materials, each substrate is super clean, low in dust, and ready to use, making setup quick and easy. Whether you're creating a planted aquarium, shrimp habitat, biotope, or decorative aquascape, Golden Tree