The GAC (granular activated carbon) refills are available from Absolute Koi direct to your door and simple instructions to enable you to easily change the GAC will be enclosed with your refil.

Today it really is not worth taking the risk, these dechlorination units are modestly priced to make them accessible for most Koi and serious pond keepers and even the largest in the range of these dechlorination units is only the price of a nice koi, but you can be sure that your water will be far better than any pond that has fresh chlorine content.