Filtering a 120 gallon

[wangster11235]

You may want a power filter as well for water polishing. I just added an Emperor 400 to my 125. Now I have the Emperor and two XP3s.

I don't know about Eheim, but the XP3s don't polish the water.

after feeding shrimp my water is all cloudy, but within an hour the xp3s clean up the fog, plus when the tank was still cycling it was foggy before i added them in and the water cleared up also.