I have a jebao pp4 that has been working fine for me. It is controllable with different modes like the ecotech but much cheaper, like $50. I also have an MP10 which I like better, but it's 5x the cost. [emoji849]
I have the new Jebao SW4 in my Fusion Nano 20. It's quiet and affordable. It has 6 settings, and is definitely powerful for my tank, and a 30 isn't much bigger. But maybe look at their slightly larger ones. Can't have tooo muchhh Powaaaa!