Click here for WWT's advice on keeping your pond free of algae.
So, what's it all about? What exactly is a wetland?
Well, everyone knows what a pond is, but you might have another sort of wetland in your garden or your local park or at school. It might be a boggy area where the ground is always damp, or it might be a stream or even a lake. They all count as wetlands and they're all really important for wildlife and for people too.
Wetlands are home to a huge range of wildlife, from the rare and endangered to the common, from the pretty, to the ugly, to the just plain weird. But wetlands aren't only good for wildlife, they're good for people too - they store and clean our water, they can help to prevent your house flooding in a storm, they can even help reduce the rate of climate change by storing carbon.
But, we have a problem. We don't really know how many of these incredibly important places there are in the UK, where they are, or even how well we're looking after them. This is where you come in. During the summer of 2009 you helped us to collect information on what's already out there by completing our online survey. The survey is now closed we will publish the findings here soon.
We want to get more people building more wetlands in more backyards. And we want to help people learn how to make the most of them.
Kate Humble's blog
Wildlife presenter and WWT Vice President Kate Humble is writing a blog of her experience creating a wetland in her back garden. Find out how she's getting on by clicking here.
You can also find out what wetlands can do for you (including saving you money!) by clicking here.