You need to assign Widgets to "Shop Sidebar" in Appearance > Widgets to show anything here
OASE AquaOxy 450 – Air Pump Set
OASE Carbon Prefilterfoam Set 6 BioMaster
OASE Filter fleece set BioPlus white
OASE Filter foam set BioCompact 25
OASE Filter foam set BioCompact 50
OASE Filter foam set FiltoSmart 100
OASE Filter foam set FiltoSmart 200
OASE Filter foam set FiltoSmart 300
OASE Filter foam set FiltoSmart 60
OASE Prefilterfoam Set 6 BioMaster 30ppi
OASE Prefilterfoam set 6 BioMaster 45ppi
OxyMax 100 Air Pump