If your growing plants in the 29 and have CO2 I'd switch to the Eheim over the emperor, or just add the Eheim to the existing filters.
OR start a 10 gallon tank:thumbsup:
OR start a 10 gallon tank:thumbsup:
I'm not sure there's such a thing. As long as you don't have a tornado inside your tank, more filtration is better than less. IME the eheim is a much better filter than the emperor.over filtrate