WyldFya;728678; said:The mech on a pro 3 as it is, is not that great, but with cheap simple modifications the pro 3 can be a killer filter. The biggest thing IMO, is that the eheim runs only 27 watts, where the fx5 is at 51. Huge difference, long term most filters will cost you more than an eheim 2080.
What size is the lift tube on the 4? Have found that the 5 is 1" but can`t find the 4s size. Want to adapt to sit on the bottom of the tank and have the hose go over Eheims tube.