hello, some Q's. would a DSB eventually serve the same purpose or function as live rock, with the surface area and all(as live rock or live sand is used to seed a DSB)? another Q... i'v read about how important water flow is in your setup, and areas becoming stagnant - but would this "stagnation" be a problem in a DSB.? would this mean i could run a DSB in DT also without an undergravel filter. i understand the importance of having no water flow through your DSB as well as no oxygen in a DSB.