<a href=showthread.php?s=&postid=14651726#post14651726 target=_blank>Originally posted</a> by badazztealcobra
I'm confused, why would you do this? The water isn't what contains any of the beneficial bacteria, it's your rock and sand. I know you bought dry rock to start your setup, so if you're starting with a perfectly clean slate I don't know why you would expose yourself to possible pests or diseases from other peoples tanks. You're starting fresh, use fresh SW....
You're going to get a NASTY cycle anyway when using 200 pounds of dead rock, old water won't help lessen that time, atleast not anything of significance....
Just MHO.....