You don't want your nitrates going higher than 20. I'd do a water change to bring it down.
I can tell I was on my phone earlier, that isn't a tongue. Looks more like a nem.
The orange guys ontop of your tank are mushroom leathers. Brownish guy on the left side is a finger leather. To the right of him is a mushroom covered rock. Then lots and lots of zoas. Another finger leather and a rock covered in green star polyps.
I dont know about the one coral on the left above the finger leather. Can't see it.
In terms of your sump, if you keep running into nitrate issues you might want to look into a fuge setup to keep them down. Throw some cheato and a cheap light and you are good to go.
Overall it looks like a nice setup. There is alot of coraline algae, and that is great. I'm impressed with your mushroom leathers. I was never able to get mine to do that well. Is it under PC
or small T5HOs for your lighting?
Also, test your ammonia again tomorrow. Hopefully that ammonia level was just a false positive.