Koralia's ( what size?)

[Mark75]

This seems like a popular question, but I am having trouble picking the right size pumps. I have a 30 gal. long with a hang on the back sump/refuge with a Rio 600 for return. I would like to place a Koralia in each rear corner. Here is what I am thinking on size. Place a size 1 on the side with the return pump and a size 2 on the far side. I am thinking the Rio 600 plus the Koralia 1 blowing towards the Koralia 2 would work out nice. What are your thoughts?? I would like as much flow as possible without a sand storm.

[MACJMC]

I would go with 2 #2's you wont be happy with the #1 IMO.

[Mark75]

I was worried that two # 2 's would be too much?

[Ebisan]

I have 2 K3s in my 50g and with one, it's not enough. 2 is about right. I'm adding a 3rd Tunze 6025 for more flow and putting the 2 Ks on a wavemaker.