Posted: 14/04/2014 at 21:53
Well I'm impressed - never heard of swan mussels and from what I've just googled supposed to keep your water clean!
Ok, back to your pond. Raised one to raised to adapt so the sunny spot in the garden sounds fine - better than being too close to deciduous trees. You can create shade using plants on the water eg lilies
Main thing with a wildlife pond is to have a gently sloping entry/exit point for your wildlife and to make it at least 3ft deep in part for hibernating creatures.