My 450 liters mixed reef tank

[Matos]

Hello from Belgium. I'm very happy to joint the community. My name is Carlos. I'm in the hobby for 20 years. I began with a fish only tank. 2 years ago I set up a reef tank. It's a wall tank with a 130 liters refugium. It's running with a kalk reactor and a hydroxyde reactor.

 

[Michael Hoaster]

Welcome to RC, Matos! I was just watching the Namur Cyclocross race in Belgium.

I'd love to hear more about your tank. First of all, what's a hydroxyde reactor?