are SW tanks expensive to run e.g feed etc?

o right i think i'll stick with FW![]()
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Waves are somewhat rare in Marine tanks, though you can make them with a wavebox. If you want you can put one on FW (I hooked my wavebox up on my 3 foot FW tank to see how it works) though it does create a slightly unnatural environment for the fish.
) Sadly he died 6 months later and now Mrs. Albi is swinging solo in the 10 gallon w/ Princess (female betta) and 4 cories.