Is "prefilter box" the same as "overflow box"?

[JR8999]

I'm ordering one from Lifereef and want an overflow box but it seems they call them "prefilter" ...just making sure its the same thing.
THANKS!

[Fish_King_25]

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[maikoa02]

Yes it's the same thing.

[twilmot]

Yep they are the same. I think (and I may be wrong) but some call it a pre-filter because it will have a sponge of some sort before the water goes down the overflow. IF that is the case I would buy an extra sponge for it. I had one on my first 125 and after a few days it will collect any debris that goes into the overflow. I would swap them out with a clean one, then clean up the one I had just removed for the next rotation. Kind of like filter socks.