I added a power head to my 75 today. Instead of let it run 24/7, I plugged it to a timer making it run on and off at different time to see if the corals like it. Some mechanical timers can do the same.
If you're using non-DC pumps (controllable pumps) give it at least a 15 minute gap between on/off cycles. A/C motors need to rest between cycles. I ruined a few old school Koralia's like this. They would eventually start backwards then stop working completely.
Yup. What fish wiz said is true. Eventually youll end up getting a wave maker.
Tunze work well with controllers. As far as digital or mechanical timers. Usually best used when running lights or dosers.
That's good to hear, I could pulse up to minutes on my old Aquacontroller, bad idea lol. Eventually cheaper controllable pumps hit the game and I never looked back.