Welome- I'm pretty new too. Glad you found and fixed your leak! Do you have a seperate holding tank to put your fish in as you lower the water? It's the only way I can catch mine. I also have a pretty big pond. 15x25 and ony Koi. I used to have goldfish but they multiplied too fast and i had to get rid of them. Emptied the whole thing and had over 100! Ughh!!!