I am having so much trouble with my small 170 gallon pond. we are having so much rain and i dont know if that is the cause. i have a lot of debris because of a mulberry tree dropping berries, i dont know why my fish seem to be gasping for air, one gold fish died and i did a 30 gallon water change ,today they seem like they are coming to the top fpr air, i have a pump circulating water, i have alot of plants, i dont know what else to do. im tempted to put more air in there with another pump. can any one help and what is the best way to get debris out. i want to but a pond vac that attaches to garden hose but i dont know if it works?