Just got 2 koralia power heads of petmoutain.com for a good deal, 1 is 1050 gph and the other is 750. I have a 7ft 210 gallon tank with an aro, jag, pbass, redtail and gar. wondering where i should put the powerheads where they will provide the most natural and best water flow for the fish. also i know the aros dont like disturbed water, pm reply or email me thoughts thanks - mparrague89@yahoo.com