just another thing. anyone know what ramshorn snails do in winter? put some in pond last year and they were doing fine but haven't seen any for months. worried too. neighbour looked after pond last october when went on holiday. regularly scooped out fallen leaves for me with sieve - only problem is i know snails like to hang on the underside of leaves so always check before throw away - neighbour doesn't know this so may have thrown them all out by accident. can't see any of my large pond snails either. seen some babies but no adults and do have snail eggs on leaves. i don't want to buy any more ramshorns just yet.
