Hi Sgillum -
When you get your aeration system installed you will need to follow a gradual start up procedure. You will run it 15 minutes the first day, 30 the next, an hour, etc until you have it running full time. It takes about a week. This prevents the bad water near the bottom from completely mixing with the good water and creating a sudden depletion of oxygen at the top of the water column. This gradual start up will protect your fish.
