Coral not doing well! Help!

[Dierker2003]

Hi, I have a 30gallon reef tank that is currently fou through a 2.5 month (76 day) fallow period and I’m 1.5 month into it. I’ve noticed my LPS coral haven’t been doing great and they used to be happy. My zoas and gsp seem super happy. I haven’t been feeding the tank much through the fallow period because my tanks always had high nutrients and lots of excess algea so I was using the time to try and lower that. I tested and my nitrates at 10ppm. So not sure how it could be low nutrients. All my other parameters are almost bang on from where they usually are. I have my skimmer running full time also. Any advice of where to go from here would be appreciated!

 

[PeterC99]

LPS are telling that something is up.

Something has changed - Calcium, Alkalinity, lighting, sump? Maybe tank has fully cycled and LPS needs more nutrients?

 

[Duffer]

Would help telling us your parameters, hard to help without them

 

[zukihara]

A pic showing flow as well please.

 

[Uncle99]

What level is phosphate?
What level is MG?