Fishy I had the 18 GC for years when nearly every fish in the pond died from a winter kill. It took 4 years for the GC to denude the pond.The winter kill was appreciated because it is really hard to get rid of GC. Especially mine since they were old and in the 20 to 30 lb range. I had speared two of them but they were so big they got away and lived. They seem to tell the others of danger because they never again got close enough to spear, where before the spearing they would come to feed with the other fish making them a good target. So I would rather put in a few and watch the results for a year before adding any more. My pond was choked with Eurasian Milfoil when I put the 18 in and in the first year I could see parts of the milfoil starting to thin out and 4 years later it was all gone and has never returned which is amazing.

Last edited by John Monroe; 06/21/15 05:02 AM.