New member and want to say thanks in advance for any help, heard this site was helpful on some you tube videos. In the process of buying a 320 gallon freshwater tank, 8ftX2ftX32" tall. I will have a total of 3 FX5s but would like to keep one for another tank, I was planning on using 2 initially. I didnt realize the tank was already drilled, has a hole in the center of each end of the tank. The guy im buying it from has 1 fx5 hooked to the bulkheads instead of the normal over the back hoses. He said I should just add a T and run 2 FX5s that way. But then you have an 8 foot gap between suction and return, not sure if that is a problem or not. I am also willing to go with a sump if thats going to make a difference, going with the 2 FX5s is my preferred route. I can run them inline to the bulkheads or run the hoses over the back. Just looking for some advice, have a 18" red tail, 20" arowana, a ray and about 5 other 10" -12" fish Thanks