It all depends on how fast you add live rock and what those three fish are. Without knowing those 2 things it would be difficult to properly advise you.
Considering a Marine Aquarium? A Breakdown of the Components, Live Rock, Cycling a Marine Tank
"The capacity to learn is a gift; The ability to learn is a skill; The WILLINGNESS to learn is a choice." - Unknown
BRAND NEW NEVER OPENED NEVER USED!
"EHEIM Quick Vac Pro Automatic Gravel Cle ...
Everything is brand new, tank only lightly used
for aquascape. I purchased a larger tank for my
Offering a beautiful blue and yellow damsel.
Approx. the size of a gold dollar coin. He's
being a b ...