I don't know if this is the right place for this post but I had a question about my frag tank (20 H). I'm currently running and emperor 280 HOB filter without a bio wheel and an Aqueon 500 powerhead. The tank has been up and cycling for about 6 months with a green chromis, green clown goby, arrow crab and a 5 man CUC. My question is 1. Do I have sufficient filtration and 2. Do I need a bio wheel? If you guys have any other tips they'd be greatly appreciated.