thatw ould be fine if you got one large enough , about 150-200 gallons, but youll run intot he same problems witht he cost of filtration, you would still need a huge protien skimmer a real big refugium with lots of live rock deeo sand bed in the fuge and pool etc. etc. etc... but theres peopele out there that have shark "pools" or ponds. there is actually on in this forum a few posts down or on the next page