Cardinals

[Denver45]

Hey All,
I’ve got a small group of three Banggai cardinals in my 45 gallon cube. When the returns are on they seem to all cluster in one corner and act like the current is too strong to swim in. As soon as the returns are off during feeding time they seem thrilled to swim around the whole tank. I don’t currently have a wave maker in, but wondering should I add one to help with random flow or does anyone know of a good solution to help them not struggle so much? Thanks!

 

[bushdoc]

They tend to gather in one place quite often, even with more gentle flow.
If you think that flow is to strong, you could add some rock or rearrange rock scape to create protected areas for them.