I'm about to make the jump from freshwater. After almost a years research I have finally decided to dive in. I want to do a reef nano tank, with mostly corals. My knowledge on them is limited although I will always study anything before buying it. I have bought a 150 ltr (40 G?) Tank. A sump is not possible so I am wondering if anyone has had experience growing corals using a seachem tidal filter and any sort of nano skimmer. I'm looking at buying a JAD DG 2516 hob skimmer later down the track. Stock will likely have 4 or 5 fish and a few inverts but mostly corals. Thanks in advance, any advice is appreciated.