What is wrong with my Acropora? -brown? spot

[nisemu]

I look at my Acro everyday as it's my first one, I give it tiny squirts of fish food often and I've only given Red Sea Plus once, given I've only had it for almost about two weeks now, the specific spot that has this brown looking spot is the spot I look at everyday as it always has new growth. There's a Mint Pavona on the same rock next to it ( not too close obviously ), it's doing just fine and seemingly gets bigger everyday. My Phosphate is 1ppm and Nitrate is 10ppm. What's wrong with my coral? Last two photos are literally yesterday before this happened.

 

[Bhuddafunk]

All I can really see is glue and a bit of discoloration, have you tried hitting it with a soft toothbrush to see if it comes off. I generally don't freak till I see bleach white.

 

[Alex Cataldo]

nutrients are too high. also, maybe try moving it to more light and flow

 

[nisemu]

nutrients are too high. also, maybe try moving it to more light and flow

they're on the top of the rock but to the right of the tank, right by the powerhead (a sicce one) I have a Red Sea 50s light on the tank, it's a 20 gal long. what should I do? also about the high nutrients should I just do some water changes? will it be okay?

 

[nisemu]

nutrients are too high. also, maybe try moving it to more light and flow

check out the last two photos, it shows how it looked yesterday, and today the entire green patch that was pooling over the super glue turned brown ish, also no to the toothbrush im always scared to do that

 

[Garf]

It’s a new tank, by the looks. No need to stress. Have you been changing water? Lots of acros meet there demise until the system reaches an equilibrium that nobody understands.