Peter May says...
Of course you can. It will have the positive beneficial effect of helping to oxygenate the water. But if it is made of concrete or limestone make sure it is sealed with a paint or sealant and steer well away from any ornaments made of copper too.
We would like to know what you think of our website!
We do our best to keep making koimag.co.uk the best place to visit, to read and chat about Koi, but how do you think we’re doing? It should only take a couple of minutes and it will help the koimag.co.uk site become the website and forum you want it to be.
Tell us what you think here