Thanks for the input guys. The reason I'm giving the Rio a go is because back a couple of months ago when I was pm'ing with Danny Zubot i found that he had the same tank as me and greatfully offered some advice and info on his sump setup. Now I'm pretty sure he has a drilled tank and from your answers it kind of looks like I'm in a grey zone where if I go with one or the other I'm looking at the possibility of something going wrong. What would either of you figure is the safer choice...going with a smaller pump and the single tube? I understand the Rio 20 has a lot of power and was hoping to get rid of my powerheads in the display tank. I also understand it's quiet. If the smaller pump is the way to go can you offer some advice on a good quiet pump with about 700gph(if you feel that's the right size)at 4ft head. I'm gonna pull my hair out if I have to go back in and research this whole thing again. This plan is still in the research and development stage so I'm open to scrapping the whole thing and trying a different plan. Again, any advice will be very helpful. Thanks.
Chris
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