Too much flow?
 

I got 2 Percula's in my 20G sps nano project, however i have no coral frags yet that need the high flow that I am currently running.. somewhere between 1200-1400GPH.. Can that much flow stress these perc's out? They are tank raised perc's, but should i shut down one of the PH's to make it easier for them to swim? or leave it and let them get use to it?

Would think if the flow was bothering them they would find a eddie or area of low flow amongst the rock and hang there. Are they out in the open?

Yea, they where out at the front of the tank... pretty open water... i did end up unplugging one of the pumps...

My percs love the high flow. They will actually wait in one of my CL returns (OM 4-way) for it to turn on then get a free ride!

To answer your question:

IMO no!

I guess if they were hiding in the rocks, it would be a pretty clear indication that it was too much flow eh?