I just set up my 150 (72x18 footprint). my plan was to use 2 established xp4's for bio and an ac110 for polishing. except now i cannot do that because i set the tank too close to the wall and cant fit my ac110 on there. just wondering if you guys have any suggestions. here is what im thinking in order of best to worse1.) buy a couple powerheads with the filter sock attached2.) buy a koralia for circulation3.) leave it with just to xp4's and kill my 75g with 2 ac110's4.) empty the tank and move it and put on my ac110 (which i really dont want to because i had to move a 120, 135 twice, and this 150 twice and im done moving tanks for this weekend)