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For freshwater aquaria, gravel is the most common substrate. To prevent damage to fish, gravel should not be sharp. Aquarium gravel can be as coarse as pea-sized or as fine as 1–2 mm. [1] It is available in a number of colors, and may be naturally colored or dyed, and may have a polymer seal to ensure it does not affect water chemistry. [1]
Common anemone species in the aquarium trade. The base color is usually brown to white, often with color on tentacle tips. Many color variations exist, including magenta, purple, yellow, and green. 15 cm (5.9 in) Delicate sea anemone [17] Heteractis malu: With caution: Difficult: Also known as the malu anemone or white sand anemone.
Oolitic aragonite sand is composed of the calcium carbonate mineral, aragonite, with an egg-like shape ("oolitic" from the Ancient Greek word į¾ Ļν for "egg") and sand grain size. This sand type forms in tropical waters through precipitation , sedimentation , and microbial activity, and is indicative of high energy environments. [ 1 ]
Live sand, a term used in aquarism, is natural reef coral sand populated with millions of beneficial bacteria and organisms which aid in the dissolving of organic wastes like ammonia, nitrites and nitrates produced by larger organisms in saltwater aquariums. Live sand can be purchased from aquarium stores, but most hobbyists make their own by ...
A national monument until 2019, White Sands National Park is home to the largest gypsum dune field in the world – gypsum being a soft sulfate mineral used in materials like plaster. The 275 ...
A deep sand bed is [1] a filtration method used in some saltwater aquariums and some freshwater aquariums. A deep sand bed, similar to the Berlin Method , is designed to cultivate anaerobic bacteria in the bottom layers of sand , converting nitrate to nitrogen gas to remove toxic nitrates.
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