Hydor Koralia 3's, 2 too many for a 40g tank?

[Chowder]

From what I have heard is that there is something wrong with the Koralia 2's and 3's right now. I think they have been recalled. You mostly can find only 1's and 4's right now. I run 2 1100 rio's and a 1500 Sei and a 1100 rio on a return and a PS2 running a small closed loop on a 65 sps tank with sand. I have no problem with sand storms or inhabitants . I don't think it will be to much. That just my opinion though