36gal Bowfront - been up 2 months

[Gunz767]

After not having a tank for a few years, I decided to get a small tank for our living room(out of sunlight) and have had it up and running for a bit over two months. Here are some pictures.

Stock list:
2x clowns
2x striped damsel
1 yellow watchman goby
1 coral banded shrimp
various snails for CUC from reefcleaners.org.
1x zoanthid
1x unkown coral(pictured below)


Equipment:
aquatop forza fz7 canister filter
fluval sea 25000k 32w led light
40lbs live rock
and some hydor powerheads + a heater

Everything has gone smooth so far, everything seems to be doing good. I'm not sure how to progress from here. Mostly just looking for various opinions and advice or helpful comments. I would like to change the fish out to something a little more out in the open(the clowns are always out, and the damsels are pretty active. the goby hides). Any recommendations? Also may remove the coral banded shrimp, though he's been great so far and probably my favorite in the tank at this point. I may upgrade to a bigger tank because I want a puffer tank (I miss my dog face puffer I had).

Can anyone identify what's growing on my rock? Pics are of some algea(is it the kind I need to worry about?) and a semi transparent tube looking thing. I've found multiples of these.

 

[tdileo]

White thing on rock is some type of sponge, the brown is algae. Both aren’t a problem and happen with all new tanks, just give it some time.
The unknown coral looks like green star polyps but your lights are very white so they don’t have the nice fluorescent green you would expect to see.

 

[Gunz767]

Thanks for the information. I thought so but just wanted to confirm as I don't yet trust my judgment! The flowy coral in question stays a brown/reddish brown and when it retracts has a purple looking skin.