saltwaterbeginners
Aquarium Advice Freak
- Joined
- Apr 12, 2013
- Messages
- 232
I saw a lot of pictures of planted tank but I don't know what is this for.
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Looks like a sump or water exchange of some sort ?
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I think its a refugium. I've never set one up, so I'm no expert, but I think works like additional filtration in a sump setup. Extra plants that eat up excess nutrients so that algae is less likely to grow inside the display tank. Some people will also use it for a fry tank.