Originally Posted by Old Scales
My Fluval 206 manual says to not keep the flow lever at less than 50% for long term setting. Is it possible you are below that? It's possible that could be causing it. OS.
I see, the filter is second hand so I don't have a manual. Why would you have a lower setting if it wasn't to be used? Silly really. I don't know what to do know as the angel is tons more active and I'm at about a quarter flow.
I'll raise it gradually to 50% flow and see how he reacts. Thanks OS