Hi all .. I have a 30 gallon with a UGF with a powerhead ( 170 GPH ) attached and also a Penguin Bio-Wheel 150 , the tank has cycled nicely and everyone seems very happy , My problem is micro-bubbles every where , so many in fact that I run the powerhead on a timer for 12 hrs a day which Im not sure is a great idea , does anyone have a remedy for these bubbles , my tank looks almost cloudy when the powerhead is running , I also do 5 gallon water changes weekly ( dont know if this matters just some FYI ) .. Thx a bunch !