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In order to create a 4-5 cm thick layer of substrate in an aquarium of a given bottom length the following is needed:
and it has porous surface
Tannins are good for your aquarium for several reasons
30cm / 1ft = 5-7kg
Grey Silica Gravel 4-8mm Size XL In order to create aTHICKNESS: 4 8mm. Suitable for every biotope and above all, perfect for plant aquariums. Safe for all living organisms. It does not influence water parameters, and does not change the Gh, Kh, Ph values. This substrate ensures very good rooting and rapid growth as well as attractive appearance of plants. At the bottom of the page, there is a calculator that allows you to calculate the appropriate amount of substrate. 100% NATURAL. Every owner of