Corals have been looking very sad lately, any ideas what's going on?

[ReefKing101]

For a couple weeks now my corals have been quite closed up especially 1 of my goniporas and another LPS. I've been doing lots of water changes lately to try to fix whatever is going on and their starting to look slightly better but not 100% like they were before. I also bought an ALK and Phosphate hanna test kit as i suspected my phosphates were high which they were. The conclusion i have come to is the high phosphates and nitrates were causing the issues? I dont want to lose my gonipora it looks like its dying. i probably put a SPS in to fast and it bleached and died within 2 weeks Also as you can see i have been constantly battling algae growing on the glass

I do Water changes every week or 2 weeks, I have been quite slack though.
96L tank about 9 months old
4 fish 2 clowns/2 chromis
Lights on around 12-14 hours a day
1 coral banded shrimp
Temp: 25-27.5c
Salinity: 35PPT
Nitrates: 10-20ppm
Phosphates around 0.60ish
Calcium: 450
Alk 10.3

the photo of the closed tentacle LPS was before I did any water changes to remedy this.


Thanks guys

 

[ReefKing101]

Anyone?

 

[ReeferWarrant]

Your Phosphate number is correct? .60 is high, .06 is in a good range.

 

[ReefKing101]

Your Phosphate number is correct? .60 is high, .06 is in a good range.

It was 0.60 I’ve managed to get it down to 0.30 but still to high I think

 

[Tcook]

It was 0.60 I’ve managed to get it down to 0.30 but still to high I think

With just water changes? Are you using GFO?

 

[tankstudy]

You may need to feed the goniopora if you aren't already.

 

[HB AL]

Most likely issue when multiple corals are having issue and no light changes or such have occurred lately I have found 99.9% of the time its something in the water chemistry and sometimes not something we readily have a test for.

 

[ReefKing101]

With just water changes? Are you using GFO?

Yes just water changes and dosing Red Sea po3

 

[ReefKing101]

Most likely issue when multiple corals are having issue and no light changes or such have occurred lately I have found 99.9% of the time its something in the water chemistry and sometimes not something we readily have a test for.

I’ve tested everything I can think of not sure what else it could be