Scottm84
Aquarium Advice Activist
Hey everyone, I have a 180l tank and I'm close to purchasing two new hydor koralias but haven't decided on which model. Either 2800 model would put me around 30x and the 4000 putting me at 40x. I hear 20x turnover is recommended but have also read 30x or 40x is best. I have no corals at the moment but do plan on getting some soft corals in the future.