First water change for the 400 liters tank - YouTube
Aquascaping an OASE HighLine 400 Planted Tank - Cinematic Timelapse - YouTube
Un 450 litres pour moins de 400€ Aquarium récifal / aquarium marin / aquarium eau de mer - Reefguardian
Discus aquarium 400 liter - YouTube
400L/120G tank. Change of direction with natural look and an attempt at some aqua scaping. Use to have a large sunken ship and a couple of rocks : r/aquarium