Fish and cheap as chips 28g beginner tank

Been an exciting couple of months.
Started with a few soft corals which have all settled in nicely.
I got a few free frags from an online order which have been fun to ID and watch. A photoS gorgonian and what turned out to be a green Pavona.
I recently got some nice frags for father's day (favia, chalice, candy cane and my first euphyllia (toxic splatter frammer)).
The favia has sent out crazy sweeper polyps, no idea if that's normal or it's going to war!

I also invested in a new light as my LFS were selling some Fluval marine 3.0 at half price.
My nutrients seem reallllyy low (PO4 0-0.03, NH3 0-5) which could be the softies or my growing population of spirorbid snails.
I need to expand my testing range now that I've got some LPS but at the moment I'm just keeping up with water changes and monitoring.
Got a strawberry conch who is great at keeping my sand bed clean and a team of trochus have made short work of my algae.
I'm only running my skimmer intermittently as I don't want the tank running too clean.
All in all it's looking great, all original fish and growing well. That might be the tipping point for an increase in tank size but so far everyone is playing nice.