sailorsnook

New here on this forum today. Currently in London, returning to my boat in Sicily soon. Looking for water purification products for my boat's drinking water tanks. Preferably powder or tablets, liquid ok if well packaged to fly in hold luggage. Any advice for where to get in London or mail order appreciated.
Also interested in potential crew for this year, sailing from Sicily to London via Tunisia, Gib, Madeira, Azores and Scillies.