Seachem Onyx Sand Freshwater Substrate - 15lb Hybrid Lighting and all-in-one setups where filtration

and all-in-one setups where filtration and lighting are built into the aquarium design

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

VarioS CR220 Features

or awkward algae patches

Helps track elements associated with coral pigmentation and biological function

Seachem Onyx Sand Freshwater Substrate - 15lb Hybrid Lighting and all-in-one setups where filtrationSeachem 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