welll................for christmas i am sure im getting a 55 gallon for one of my rd.what do u guys think about that.I kno ive probalaly asked this but....would this be kool if i used black sand for subtrate.fot filters all i want on the tank are canisters.would a powerhead blow the sand everywhere.the canisters i want to use are magnums....but what do u guys think.....have u guys noticed that alot of the big canisters dont have the same flow rate as some hob filters