Seachem Onyx Sand Freshwater Substrate - 15lb Hybrid Lighting 7 L cup provides practical

7 L cup provides practical capacity for larger systems

The Tunze Coral Rack Long - 0104

Heavy coralline algae or thicker deposits may require a longer soak before brushing or rinsing

If it is starving it may shrink in size or lose its feeding tentacles

Seachem Onyx Sand Freshwater Substrate - 15lb Hybrid Lighting 7 L cup provides practicalSeachem Onyx Sand Freshwater Substrate 15lb Seachem Onyx Sand Freshwater Substrate 15lb is a naturally dark gray carbonate rich sand for planted aquariums, designed to support KH levels while providing a long lasting natural substrate bed. Seachem Onyx Sand for Planted Aquarium KH Support Onyx Sand is suited to freshwater planted aquariums where a dark natural substrate and carbonate rich composition are preferred. Unlike the Flourite substrates, Onyx