How is the amount of Kaldnes I require in my Nexus calculated? Is it based on the volume of water in my pond?
It is based on the amount of food you expect to feed to your Koi. The Nexus is supplied with 100 litres of K1 media; which is sufficient to cope with the biological loading from feeding 0.5kg of food per day. If you expect to feed more than this then simply add further media up to the maximum loading of 200 litres of K1 per Nexus unit. The aeration also needs to be increased to ensure the media remains as a fluid bed.
