I have a 100g tank. 2ft by 4ft, 20in tall. What would be better for my flow? 2 MP40's (used for one year $400) or one gyre xf250 (would buy new)? Any insight would be helpful! Thanks!
I think you would be fine with either. I personally use two Gryes on a 120g, same dimensions just a little taller, and love them. Opinions are sure to vary when it comes to pumps!