Closed Loop on timer or 24/7 ?

[scubadude]

I have 2 1" SS's driven by a AM3000 as my closed loop. Im curious if I should have this on a timer...maybe have it operating during the day when the lights are on...that way I can feed the tank 30min. before and 30min. after the SS's kik on? I would like to know you guys opinions and setups. I know some of them wave strips have a "Feed" button that will totally stop all the PH's and I have heard this to be very favorable!

 

[npaden]

24/7! The water doesn't stop on the reef at night.

Nathan