idk i don't wanna spend more money on this tank than what it's worth. I thought i was getting a good all in one nano reef setup from instant ocean. What i got was an eclipse 12 that came with salt. You can imagine how ****ed i was. Had no way to know than to open the box and find out, and once you opened the box *BAM* whoops, srry , you can't return this. 200 bucks down the drain. I'll have to see if my uncle has a larger tank that i can have. I'll look into a small HOB refugium, but idk if it will work with the eclipse 12s stupid filter setup. Also i have no idea how to install a sump, nevermind what it is, or build a refugium. So i guess i'll check the HOB thing out