Are we talking about fish or coral? Or both? Sent from my iPhone using [url=http://tapatalk.com/m?id=1]Tapatalk[/url] said:Great point as who is getting fed deeply effects the way I feed. If coral broadcast I turn off return pump but leave flow pumps on, if coral target I turn off return and powerheads, if fish I only turn off return. Apex with four feed modes makes this a breeze!