I just got a 180 gallon tank with no overflows. I want to filter 850 gallons per hour. I have a filstar xp2 that filters up to 300gph that I will be using as a supplement, so I need a new filter that filters at least 550 gallons per hour I guess. I don't know what kind to get. Someone recommended wet/dry. I've never had a tank over 75 gallons so I don't know anything about these types of filters. What are some brands that have good performance for a decent price? Also, easy setup and maintainance is a must.