I have a 125 gallon tank and the filtration on it right now is an XP3, XP2 as well as an Eheim Professional Wet/Dry canister. Anyways, my 54 gallon corner tanks filter broke and I was contemplating putting the XP2 from the 125 into this tank. I am trying to decide if I should get an FX5 or Eheim Pro 3 and then have just two canisters for the 125 instead of three or else get a second XP3 and have the two XP3's and the one Eheim wet/dry canister. I am used to the Rena filters and have never had any troubles with mine. What do you think the best configuration of filtration for the tank would be? I know I am probably overcomplicating this but I just can't make my mind up. Any advice is greatly appreciated.