so far so good he doesn't chase them or nothing smaller gar is a little afraid . you think i can add one more fish it's a 135 plan on upgrading to a 300 when the gars frow out. O yeah i also bought another canister filter. got a hydor this one is rated for 40 gallon i also have a bigger aqueon that's rated for 155 and a aqua clear hob you think this is enough filtration??