How's this for flow?

[ray j neal]

This is also in the reef forum, but no one seems to have opinions over there:
I have three Koralia 4's (1200GPH) in my 150G, one on each end. I also have a 1000GPH return pump and a 1300GPH overflow. There is alot of nice water movement. The Koralia on the left facing right blows down at the rocks from the middle of the tank. The one on the right is about 6" below the water surface doing a great job agitating and breaking the surface tension. I just recently (few days ago) added the sump. I have the 1000GPH return aimed right at the surface. I want to move the Koralia on the right end lower down and aim it at the rocks. My question is that if I do that will water dropping from the overflow down to the sump and then the return pump aimed at the surface of the DT be enough agitation to maintain dissolved oxygen levels? Right now the entire 6 feet of surface water is nice and wavy. If I aim the Koralia at the rock only half of the tank will have nice agitation. Is this going to be sufficient? Thanks,
-Ray

 

[srfisher17]

I think it will work great. Even the calmer part of the surface sounds like it should have plenty of movement; you don't need white caps for gas exchange to take place.

 

[ilovemytank]

It sounds like plenty but if you are using a skimmer than you definately have enough with that alone.

 

[rotarymagic]

Originally Posted by Ray J Neal
http:///forum/post/2774523
This is also in the reef forum, but no one seems to have opinions over there:
I have three Koralia 4's (1200GPH) in my 150G, one on each end. I also have a 1000GPH return pump and a 1300GPH overflow. There is alot of nice water movement. The Koralia on the left facing right blows down at the rocks from the middle of the tank. The one on the right is about 6" below the water surface doing a great job agitating and breaking the surface tension. I just recently (few days ago) added the sump. I have the 1000GPH return aimed right at the surface. I want to move the Koralia on the right end lower down and aim it at the rocks. My question is that if I do that will water dropping from the overflow down to the sump and then the return pump aimed at the surface of the DT be enough agitation to maintain dissolved oxygen levels? Right now the entire 6 feet of surface water is nice and wavy. If I aim the Koralia at the rock only half of the tank will have nice agitation. Is this going to be sufficient? Thanks,
-Ray
post pics of the tank and surface.