[fishytime]

I would agree with almost everything said, except for the dry rock....I hate dry rock....it will cause you nothing but trouble and I will bet my life that Marko rock is not lighter than good live rock....it is basically petrified live rock, so I seriously doubt it will ever have the capacity to be as good as live rock.....dry rock could take anywhere from a couple monthes to a year (or more) before you will be able to count it as part of your biological filtration.....for the 25-30 pounds that you will need for that size tank, I would bite the bullet and get all live rock.....start a tank with 100% live rock and you need to be patient, start a tank with dry rock and you will have to be REALLY patient....I know others will chime in and say that they never had any issues with using dry rock, but I work at a LFS and see and hear about the problems on almost a daily basis...