Hey! right now I have a 46 gallon freshwater tank, and a 29 gallon biocube saltwater tank. I have had the fresh water tank for about a year and the saltwater one for about a half a year. I now want to get a larger salt water tank to host a bamboo banded shark. I have been looking in to sumps because I have no prior knowledge on them, but I did not know if it was worth going out and paying about $350 for one already made, or trying to make my own If anyone has any advise please help me.

i would just build one... why buy when you could DIY...


i would recomend a huge wet/dry... since sharks won't have enough room in a FOWLR tank...


i'm making one right now out of some rubbermaid containers... it's really simple... the cost is about ~30 or so...

it's used to let the tank water overflow into the sump or filtration area...


it works with gravity enduced syphoning... very simple... you will need it for an wet/dry... or else in a power outage or when the return pump fails all of the water will drain out of the tank and onto your floor...


if you don't understand how they work buy one built... but if you learn the ideas and principles of fluids try to build one yourself...