When it comes to a sump I would recommend that you get the largest that you can fit under your stand (if that is indeed where you plan to keep it).
A sump is basically another tank or container of water that is plumbed into your display tank that is used for housing things like your return pump, skimmer, and other hardware. Using a sump will also effectively increase your total water volume as well as the square inches of water surface. A sump is a good place to hide all of the hardware so that it is not cluttering up your tank. A sump is also a good place to store extra live rock for improved filtration.
A refugium is a place where you can grow macroalgae, pods, and other critters that would normally be eaten by the fish in your display tank. This is why it is called a refugium, because it provides a place of refuge for these critters.
|