Unique interlocking protection system that floats on the surface of your pond. This ring version is perfect for round and/or small pondsbut check out the rectangular version if you have a large pond. Netfloat is less obtrusive than the conventional pond netting and can be fitted to any pond shape. This Netfloat system works as an efficient deterrent protecting any koi carp or goldfish from heron attack! Netfloat can be cut or left out to allow pond plants such as lilies to grow through and they can easily be removed and replaced for pond maintenance.