I just did my water test and here are my results:
Ammonia.2
Nitrite 0
Nitrate 10
Phosphate .31
Calcium 500
Alkalinity 9
Magnesium 1320
Salinity 1.024
PH 8.0
I do my water changes Sundays and change 5 gallons on a 13.5 gallon system.
I don’t see any growth and my zoas don’t open for the most part.
What can I do to get them happy again?
There's a few things to consider here, hopefully i can help a bit- i have 17gal of water in my system and it has been up since June.
Like, the others have said, you should not have any Ammonia ( i never saw ammonia in my system, even when cycling). Starting with dry rock might be what's causing those Phosphate readings, although I too, started with dry rock and haven't had phosphate issues. I also didn't properly cure them, i only soaked them in distilled water for a week or so- maybe i just got lucky with those rocks.
Up until a little over a month ago, i was struggling to keep my corals happy. I came to the conclusion that my water was too clean (not necessarily your case) and my white light spectrum was far too bright, and my blues may not have been strong enough.
After you clean up your water from the ammonia, nitrate and phosphate, you still see no progress, try experimenting with your lights, maybe turn them down, especially the whites. Also, 5gal water changes every week on 13gal system might be too much. That's how much i was doing on 17gal, and i have since scaled that down to half. Less water changes, reconfigured light intensities and more food added to the system seems like it's really helping my corals.
A bacteria additive might help with the ammonia and after ammonia and nitrates have been cleared and your still having high Phosphates, maybe a bit of GFO could help.