I know the feeling. I just started SW
a few months ago, I've always been a FW
I have come to find out that alot of stuff is more expensive for miniature tanks. The remora with skimmer box was $200 but it comes highly rated and is one of the few that can HOB
I'm just using the AC
for now since I have no sump nor can I get one when I upgrade to my 55g. Also, since we are dealing with a smaller volume of water there is less room for error.
It's a whole new world but ask your questions everyone here has been more than helpful to me. I wouldn't have a reef tank if it wasn't for this site.