Undergravel filter for aquarium / půdní filtr do akvária
by Zdeněk Šumšal · from Printables
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Household
Bubbles going up in tube with water. Water is drawn in stones and plant roots. Dirt stay here to feed the plants.
filteraquariumtankcleaningfishsandplantsstonesfiltrationfiltrundergroundakvariumbubblesrootspudnishrimpsundergravel
