I bought a 40 gallon breeder. I siliconed in a Fiji AIO, Using a filter sock. The thing is the acrylic bracket that the sock fits in doesn't fill the whole space inside. So I filled the Gap with filter foam. Tank is set for a few days and I heard the water flowing so when I looked it was lower inside the cube than when I first started. So I cleaned the filter foam just under running tap water. Now my water is super cloudy from all the particles knocked loose. Don't feel like I'm doing this right, any help would be greatly appreciated.