
Originally Posted by
Europhyllia
I find smaller and more works better for me than one large output.
I have 4 MP40s on the 215g tank and am only running them at about 50% each (the gorgos like it best that way) but the 4 make a nice set up for a gyre flow.
For me it's more about distribution than strength.
In fact on my little 60 gallon seahorse cube I don't have any powerheads and I am so very pleased with the flow in there. Spray bar on top right and spray bar on bottom left and nothing settles on the ground at all. It's perfect in my opinion. I wish I had such perfect flow in the big tank with the 4 MP40s.
My new mantra: more is more when it comes to distribution but less is more when it's about flow from each individual source.
I can't imagine one MP40 being too much for a 75g though. You can always dial it down to where you want it.