Agree with the AI 16hd recommendations above. One of those would be “monster” of a light over your small tank. Incredibly easy to use as well. I recently got the Nero 3 power head, and the AI app is pretty great (having some limitations of course) for managing flow and lighting.
Unfortunately, recent price hikes over the last year or so have made a no-brainer choice a bit more complicated. I’d recommend checking the marketplace and in local reef groups on FB for people selling a 16hd used. They can be found for ~$150-$175 if you keep an eye out for a week or two.
Also, for what it’s worth, I have 2 16HDs over my IM 30L and love them. My only real regret was choosing the hard metal mounting brackets over the flexible arms. I didn’t put too much thought into it at the time, but looking back I wish I’d gone with those instead.