Stocking help/suggestions

I just added a fish to my 28 gallon bow front. Now I am wondering if I can add more (going to give it two or three weeks if so. Just want to research any suggestions), and what are some good recommendations.

I do not have a sump or refugium (still debating a HOB refugium to run at night to minimize PH swings, haven't decided yet). I do have a skimmer and a decent amount of surface movement. Currently it is a FOWLR, but I would like to move into basic coral in a few months.

My current Livestock:
CuC from ReefCleaners
2 Cleaner Shrimp
2 Clownfish (Ocellaris)
1 Firefish

Would I be overstocked to add anything? If not, what are some recommendations? I'm looking for both color and personality!

 

With the two clowns in there already - and not having a fuge/sump - I would personally say you are very near, if not at the stocking limit for that setup.

The clowns can vary in the display of aggressive behavior - but most are bullies - especially when they are "there first" before other fish - they tend to defend their territory - and in a 28 gallon tank - they probably think most of the real-estate is theirs already.

 

With that idea, I have a quick question. Do clowns tend to get more aggressive as they age? Will they become more aggressive to fish already in the tank? Currently my clowns are actually really timid, but they are also pretty small and young

 

^ Yes and Yes.