Who said it is a must have? I said they would definitely need it, it makes life easier, less water changes, mother nature's filtration, how could you not need that? I guess some people do but is not near as realistic and a lot more maintanence goes into those tanks than is necessary. Especially with keeping such a big fish as the white tipped Shark, you will need TONS of other filtration needs to keep up with the amount of waste those fish produce. I would much rather opt for primarily live rock and then some supplemental filtration too. JMHO!
Based on your comments tullsterx, you must not have live rock in your tanks...Right? How many tanks do you have, what is the stocking level, how much maintanence do you do and what are your water quality levels? Just curious. Anyway hope this helps and good luck!
Based on your comments tullsterx, you must not have live rock in your tanks...Right? How many tanks do you have, what is the stocking level, how much maintanence do you do and what are your water quality levels? Just curious. Anyway hope this helps and good luck!