hello everyone.im running a 84x30x24 tank which is stocked with 1x15" silver arowana,1x10" jag,1x10" flowerhorn,1x8" blue snakehead,1x14" pangasius and two parrot fish.im moving house soon and ill be getting a bigger tank.at the moment i have two fx5's running and i do 40% weekly water changes with my r o water system.the water levels are always good but it always has alot of floating particals.can anyone give me some advice,thoughts on weather i need to change filters?or am i doing anything wrong.any info would be great.thankyou