So currently for water movement I am running two wp40's one on the right and one on the left and an mp40 in the center all on the back wall of the tank. The tank is 4' x 6' so the are on the 4' back pushing water towards the front. I get a little wave but it's not huge sometimes they are synchronized and other times they aren't. I was thinking of swapping out the wp40's with wp60's. I clean them routinely so getting clogged is not an issue. Is this going to be overkill?