Servus,
Cautand pe net ceva informatii legate de pozitionarea mediilor filtrante in filtrul extern (aveam o nelamurire legata de inelele ceramice) am ajuns pe un forum din uk unde mai multe persoane recomandau ca medii de filtrare biologica, din cauza pretului, folosirea de bile ceramice expandate folosite in cresterea plantelor de apartament sau in fermele hidroponice. Am cautat pe youtube si pe internet mai multe detalii si par a fi ok pentru cresterea bacteriilor benefice.
Ex: CANNA Aqua Clay Pebbles,
https://www.youtube.com/watch?v=gkTd3Vbm3LE
A folosit/foloseste , incercat cineva asa ceva ?
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