Substrate is an important part of your aquarium setup because a lot of animals dig in the ground to search for food. Also any live plants present need a safe hold and have to absorb the food in the ground through their roots. Digging fish always prefer rounded smooth substrate so as not to damage their bodies. Undergravel heating can only be recommended for medium-fine to coarse substrates because water circulation cannot really build up in very fine substrates; therefore most sands are unsuitable.
Perfect hold for plant roots: substrate with 0.2 - 0.6 mm grain size for freshwater and marine aquariums and terrariums
Vigorous plant growth: prevents the seeping in of sludge and other waste material with its fine granulation and density
Ideal for fish, invertebrates and plants: no release of unwanted pollutants into the water.
Fine granite sand is gentle on the sensitive barbels of the bottom-dwellers
No light reflections – full colouring of plants and fish: easily scared animals feel more comfortable and show their full, natural colouring
Contents: 1 bag Sansibar Dark. Not really suitable for undergravel heating cables
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