| -is an air driven counter current internal protein skimmer with an double-cylinder system for aquaria up to 400 l. Within the inner-cylinder, air bubbles rise and carry large quantities of water. This water falls in the external-cylinder and carries thrust the air bubbles downward into the expansion tube. Here the bubbles turn, and using counter current rise upward into the foam cup. The foam cup ic conical, this ensures quick extrusion into the cup. An holding plate and lime wood air stone are included. Diameter: 75 mm, Length: 520 mm, total width 150 mm |
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