You don't even need a sump. The purpose is for added water volume and more circulation plus the option of putting all your equipment in there
. If your skimmer and pump are large, and you want to put in a refugium, filter sock, and other pumps/reactors, get a large sump...if you feel you have no need for a huge sump, as your skimmer is small and you have not a lot of other equipment, go small, but those are the factors you should consider. It's always said that bigger is better! If you can get your hands on a 500 gallon sump with a 5 foot skimmer and a huge portion being a refugium filled with macroalgae...go for it (bit extreme, but this defines a reef junkie
). Also if you're going FOWLR
you could even use a canister filter (some even use them for reef tanks, it just makes doing water changes a higher priority). That is a nice looking sump, but there are a few things to consider. First, in a traditional sump, there is usually a first chamber that holds bioballs or is just where the water enters, then goes to a second chamber with the skimmer, then the spot for a refugium (if you have one), if that's where you want to put it, and finally the section to lead to an external pump, or a large enough space for the internal one. Sumps are really customizable and can be in any pattern really, I was just telling you the basic sumps that are usually sold. Pretty much like this: Aquarium Wet Dry Filters: Aqueon ProFlex Sump Filtration System at Drs. Foster and Smith
Okay sorry for so much, but wait there's more haha! So bioballs are considered an old method of filtration and they can lead to raised nitrates. However, this is perfectly fine for a FOWLR
with live rock, as the parameters don't need to be as spot on like with a reef. (You might be able to make it a refugium if you really wanted to). Plus I don't know if you could have such a small pump for the height (head pressure)? Not sure about that completely though...Just might be that the pump isn't strong enough so more water comes in then is returned. Lastly, definitely ask what the skimmer is rated, and what brand (doesn't look like one I know). This looks like a pretty good deal to me and would work just fine for a FOWLR
(really most things would), but for a reef tank, I'd go a different route IMO
. Thanks for reading such a long post!