I am planning a big tank. somewhere in the 100g region. Can anyone make a recommendation on a good QUIET filter. my hubby already complains about how loud the filter in our 30g is and most of the larger filters ive seen have two biowheels and ive heard people say they have four running on their tanks. Will more biowheels add to the noise? i would think so. would a hood help? I am trying to keep the cost down and the hoods i found were pretty expensive although i am getting a great deal on the tank.