I have a 30 gal reef tank with a small 8gal refugium with deep sand bed, live rock, cheto, and a 10k bulb. I have my ocerflow full of bioballs. What are some good resources for the FACTS about bioballs in a reef tank. I have heard mixed reviews. Thanks
if used properly are beneficial, if not they are a nitrate factory. In your case under high flow they will be beneficial, in a low flow you would have to keep them clean.

