Did you ever find somewhere to buy carboys/demijohns in Helsinki? The only place I know of is Viinimaailma:
http://www.myyrmanni.fi/shops/-/shops/Muut-erikoisliikkeet/1000676/Viinimaailma
Hi there,
Didn't expect to find any other Helsinki folks here! I just joined and have my first homemade wine batch (black currant) fermenting in the corner right now. Seems you have done this a time or two and could give some advice over some pints. I know another Canadian homebrewer here who...