τελεια αναπτυξη εχουν αλλα εχω διαβασει και αυτο που σου ειπα. δεν σου κανω συσταση η κατι τετοιο.. ας πουμε ενα απο τα πολλα που εχω διαβασει
The ionic composition of water is important for all fish. The concentrations of the divalent cations Ca and Mg play a vital role in the ionic regulation of freshwater fish because these ions modulate branchial permeability.Water is also an important source of the Ca and Mg required for fish growth
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one pound of flesh, no more no less
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