Thank you Macrazz, That does make sense, and certainly the creatures don't seem to mind, they keep on coming. I will remember it for next time. I am sure it will be something I will need to deal with in the long term. Many thanks.Hazel.
Thank you Barry Island, good point ,well made, I have done that, too with the other bins. The pond is now full and barrels all cleaned. Many thanks to all of you. Hazel .
Hi @theconstantgardenerinwales - I've had great success with Fresha Tank microbial disc. Contains industrial silver. Not cheap but should last forever. Can be used in water butts, fish tanks, ponds and they say results should be noticed within a month. It keeps the water clean by killing single celled organisms that come into contact with the disc so doesn't treat the sides and base of the container. Hope that helps
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