An iced over pond will have a detrimental effect on animal and plant pond life, although fish and amphibians will survive under a frozen surface for some time, ice traps gases escaping from decaying material and prevents oxygen from entering the water.
Oase is a company that is passionate about water, with a huge range of products that will soon include a brand new indoor aquarium range. That's why I recently went over to Germany with my colleague Andrew Hall to visit their headquarters.
All ponds need a ﬁltration system to keep the water clean, clear and healthy. As Dan Everton points out, stocking levels of fish are much higher in a garden pond than in the wild and, without a ﬁlter, impurities accumulate to create a toxic environment.
Dan Everton explains that keeping a pond healthy requires a combination of nature and technology right from the planning stage.
David Coton has put together this FAQ feature on garden pond filters to address some of the questions asked by people new to pond and fish keeping, and hopefully, make it easier for others to make their choices.
If you want to create a Chinese or Japanese styled garden, David Coton has plenty of ideas and inspiration for ornaments, structures and plants that will provide a wonderful oriental feel.
This is Andy Hobson's review of the Hozelock Bioforce Revolution pond pressure filter which has been designed to make life much easier for pond keepers.