Hello I am running a tank with 3 bumble bees 2 eletric yellows and 2 red zebras. My wife really likes the bala sharks but I'm unsure about compatability. From what I can see the water perameters are alittle diffrent mainly the PH level. I have a PH of 7.6 right now which is just barely out of the balas range. I know they are a fairly aggressive fish the I think will survive my aggressive tank. Any thoughts or suggestions about mixing these 2 kinds of fish?