what to add

Ok guys, I’ve set up my innovative marine 30L a few months ago and now I’m looking for more stuff to add to it. I currently have 2 clownfish, 1 Royal Gramma Basslet, 1 Tailspot Blenny and 1 orange parwn Goby. 2 large elctrtic orange hermit crab, 2 eclectic blue, 4 blue leg hermit, 5 Trouchas...