Quote:
Originally Posted by
An Ly 
I recently been changing my pond water every week about 30% each time, been doing it for about 1 month now, and notice a big difference in the koi behavior, my pond is about 2000G with heavy stock of koi. Each time I add some dechlorinator before filling up pond. What do most of the members think, is it good or bad, as far as filter, will this hurt the filter, hurt the Koi etc? Thoughts and opinions appreciated.