Did a big cleanup yesterday. Moved some frags down. Removed some dead coral and cleaned up some Kenya trees cos they were everywhere.
Trying with just one gyre up on the overflow box set to alternating flow. So far it looks good. The gyres get easily gunked up and flow almost stops so if I can trade one for the other at cleaning time, then that would help. Will have to see how it gets on. The overflows from the return also give some flow down the sides, so maybe with rolling flow on top and side flows from return, that might be good flow.