SOUNDS LIKE YOU HAVE A NEW LAKE,HOW OLD IS THE POND?MY GUESS WITHOUT KNOWING THE ANSWER TO THE ABOVE QUESTION IS YOU HAVE NOT WAITED LONG ENOUGH TO LET YOUR POND MATURE.I'VE BUILT 2 LAKES AND THEY BOTH TOOK ABOUT 3 YEARS BEFORE THE BASS FISHING GOT VERY GOOD.I DO HOWEVER THINK THE CRAPPIE ARE GOING TO HURT YOU IN LONG TERM EVEN THOUGH I DO NOT BELIEVE THIS TO BE THE PROBLEM NOW.IN A SMALL POND THEY WILL OVER RUN YOU 9 TIMES OUT OF 10.I WOULD SIT BACK A WAIT,WHEN I STARTED I FOUND 1000 REASON'S WHY MY BASS FISHING WAS NOT AS GOOD AS THE BREAM AND CATFISH.I'VE HEARD EVERYTHING FROM BIRDS GOT THE FISH,TO MANY BREAM AND THERE EATING THE BASS EGGS,ETC.SIT TIGHT AND WAIT IT OUT.GOOD LUCK