More Filter or PowerHead?
I have a 150 gallon w/ three Eheim 2217s. Although the water seems to be pretty clear, there are particles floating in the tank - not much water movement in certain spots. I can really tell by how much time it takes the ferts to be absorbed / mixed in.
Question - should I get a bigger Eheim to replace one of the 2217s, or a powerhead or two? If the powerhead, which one would you recommend.