Posted: 14/11/2014 at 16:46
DD.......obviously the bigger the pond, the less trouble with stagnation but given the right combination of plants it shouldn't be a problem. All I would say is that if it is only small and not very deep, take care exactly where you site it. Evaporation can be more of a problem in a long hot summer in S. France than it can here. Surface coverage (say one of the Dwarf Water Lillies ) would certainly help that possible problem. If you get a problem with blanket weed, don't forget the Watercress solution ! Small guage netting spread over in Autumn will help keep the majority of debris from ending up in the pond.
Look forward to hearing how you get on