using one koralia 2 and one koralia 3 in 40 gallon

using one koralia 2 and one koralia 3 in 40 gallon is that too much flow ?

 

What are the dimensions of the tank?

 

Sounds a bit much switch 3 or 2 for 1...?

 

For SPS/LPS you should be fine. I use a K3 in a 20 gallon SPS frag tank with no problems, a K1 would be real weak, I hate the K1 in my 16G nano, its pathetic.

 

"There is no such thing as too much flow, only misapplied flow"

 

Hmmm, that's odd, I have a #1 in my 14 gal. and get great flow. Are you sure there isn't something wrong with the impeller?

 

Not too much by any means. I have a #2, 3, 4 and a nano in my 55 gal. and it is perfect for me. Placed properly like the Doc said and you could use two #3s.

 

If this helps...I have 2 3's in my 46 gallon bow front. Like others have mentioned...placement is key.

Think of the type of corals you want to keep and possible placement. Create high, moderate and low flow areas if possible. I have my 3's little higher on the sides and facing each other, but 1 turned little to right and other to the left. So the flow isn't directly hitting each other (creates turbulence). I have flow in front and back of my tank. Low flow is bottom for lps and high flow up top for sps. I have no dead spots. You have to play around with it and you will know you have it once you aren't creating a sand storm ;D

Oh...helps if you dont use the flow directors that come with the koralias. Helps keep the flow wide.