I'm setting up new 75 gallon african cichlid tank, and I was thinking of getting a powerhead. I want a powerhead or even a couple to help with dead spots , and to help push debri off substrate. I am not really sure what size or even what brand to get. If I get two I would think I would want to under power each because I wouldn't want to much flow to stirr up the sand. I was looking at getting either maxi-jet or Koralia nano or Koralia evolution. Any suggestions would be great and very helpful. Thank You!