Hi all, I need recommendations. I have the AI Nero 3 powerheads for my DT. Many of my reefer friends recommended them to me. I've hated them and the AI app from day one. I've had the powerheads for maybe 2 years and I've had (between the 2 of them) them die and malfunction on me a total of 4 times. The past 3 times AI sent me new ones and it's the same crap. Last night one developed the red light and I've tried everything to fix it. I'm sick of them and I would like recommendations on new powerheads. My tank of a 40g tall and I have a variety of corals. Thanks again in advance for any recommendations