Before you scrap the CC
do some checking. DSB
have pros and cons as well. IMO
guy is correct that CC
does help stabilize the PH
. I know alot of people use DSB
with success. I think there is a little more involved with a DSB
and they are more widely used in reef tanks. personally I have CC
and am very happy with the look now that it has matured. I consider my tank a FOWLR
and do not have plans to do a reef in the tank.
Once you decide what your ultimate goal is for your setup it will help you make other decisions. You always want to have a plan.
I would also caution you on big fish. Even with a 160gal there are some limitations. Check out compatibility as well. IMO
sharks and rays have no business being in the aquarium trade, JMO