The team from the 1st Orestiada Lower Secondary School, comprising 27 pupils, secured their place in the First LEGO League (FLL) final on 2 March in Thessaloniki, by winning first prize for their overall project – which focused on hydrodynamics – at the qualifying rounds held last Sunday in Xanthi, with many school teams taking…
Zeolite in an aquarium and its filters in Nea Orestiada. We note that after 45 days of use, the water remains clear. After this use, the zeolite can be reused in compost or in the garden, as it has absorbed the nitrates from the fish waste, inactivated them and will return them to the soil…
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