Too much flow??

[JKDMan]

Do you guys think I'm using too much flow? . i have a standard 75 gal DT. With a 650gph return and I'm trying to decide if I should use both of my tunze turbelle stream 6100s or just one.. everything is happy with one but I think my flow is low because of some dead spots and extra dinos on one side vs the other, so i popped a second one in tonight.. each one is turned down all the way which is about 1060gph a piece.. they are on a controller going on and off oppositly.

 

[T-J]

I judge it based on what the corals want/need. Most of my SPS do better in high flow. Torch coral, not so much. So I adjusted my flow based on rock structure, tank shape and what kinds of corals I wanted to keep.
Unfortunately, it's not as easy as saying, oh, you have a 100g tank, so you need 3500gph flow.