I just bought some fake plants and an air pump with 2x 12" air stones!!! i set it up and if i do say so myself it looks pretty hot!! lol. Ya i most likely will have to rehome a fish or 2 but im hoping the overcrowding might even out some of the aggression. Right now the Salvini is the boss of the tank and the flowerhorn is runner up. I never knew a salvini could be so nasty, it bullies all of the other fish around. The flowerhorn gets aggressive mostly when it comes to feeding time. The firemouth likes to act up every once in a while but gets put in check real quick. The convicts havent shown pretty much any aggression at all and im surprised but they are still kinda small at 2inches. The salvini is 4-4 1/2in, flowerhorn 3 1/2in, firemouth 3 1/2in btw. 59$ for a canister that will over filter my tank sounds amazing to me i will definately be picking it up! maybe even 2 and ditch the emperor400 HOB? I have a ? I have currently a orange crayfish that will max out at i think 6-7in will he be able to hang with the fish as they get bigger? If not is there a crustaceaon (sorry if its mispelled) that can hang with them when they are grown? Also should i keep the tiger barbs as dithers or should i get rid of them as the fish get bigger? Thanks everyone for the responses i love this forum! =) BTW will be uploading updated video of tank with plants and airstones.