1 powerhead or 2

[Mischke]

when setting up an NPS tank should i use 1 large powerhead that keeps the water motion going continuously in one direction, or use two to get random flow in the tank?

 

[stunreefer]

Depends on what kind of coral you plan to keep... some Gorgonians need specific (directional) flow rate to feed.

Regardless you'll want enough flow to keep all food in suspension.

 

[greg1786]

Depends on what kind of coral you plan to keep... some Gorgonians need specific (directional) flow rate to feed.

Regardless you'll want enough flow to keep all food in suspension.

Learn something new everyday. I awlways thought as long as you had enough flow to keep food suspended in the water column, it didnt matter which direction it was flowing from. Thanks for that info. In answer to your question i prefer several small ph to one large one because i feel like it gives me more options on where i want high vs low flow and what direction i want it to come from for specific areas of the tank

 

[SantaMonica]

If you look at sea fans you can see how they curve into the flow; the polyps face the incoming flow.