I got the big a.. euroreef running. 2 sp5's and it didn't do a thing. 12-2 body I was very disappointed and freaking out. well it turned out there was way too much water going through and out so I recirulated one of the pumps and feed with the other and it was instant crazy. I had to lower the outlet pipe about 4 inches or better and it is still extremely wet skimmate. good thing it can go lower. I may have to sell it though because it may not fit under my stand. all depends if I can get a piece of 3/4 inch plywood under the tank on the stand. it is sitting there and can't ever seem to find the four men and couple boys it takes to lift the tank so I may just sell it and get a smaller skimmer. so if you know anyone looking for a massive skimmer let me know. not positive yet but it may have to go.