Please help my sos!!

[kai hen]

First picture is Wednesday first day in my tank. And second is today. Is this normal? Ca410 mg1290 kh7.7 tep 79° uv 110 v 110 rb 140 b 110 8hours a day. Par at 550 Please help me，no3 almost 0. Po4 .04

 

[MERKEY]

I could be missing something but everything looks normal........but I'm no sps expert

 

[Jeeperz]

Turn the power down a bit for acclimation?

 

[kai hen]

Other dying coral... Suddenly....happen in one day. After 10%water change.

 

[kai hen]

This morning

 

[Jon Fishman]

Maybe too much light too fast?

 

[Jeeperz]

We're they dipped? Don't use coralrx on sps. I've lost many using that stuff. Now I use Bayer with no issues.

 

[RCeiver]

They look like they’ve browned out, but aren’t dead. I’d guess that they went from a vendor with lower nutrients to a tank with high nutrients.

 

[Hemmdog]

Why are you doing water changes if you have zero nitrate ? That’s your issue.

 

[Saltyreef]

+1 ^^^
also elevated phosphates and no nitrates can be a recipe for disaster!
are you feeding a lot?

 

[kai hen]

I am feeding every two days. Frozen shrimp for fish. And red sea ab for coral. I think my mistake is no3 too low and light too high base on wwc information.

 

[rkpetersen]

Light intensity seems much too high for those low nutrient conditions.

 

[kai hen]

I am thinking. High intensity plus high nutrient equal to algea issue.

 

[Saltyreef]

Thats why you want your nutients slightly elevated....not high. Also, algae issues stem from an unstable tank most of the time when it outcompetes your bacteria for ammonia.
With a strong bacteria colony in a stable tank, you should have a bit of excess nutrients for the corals to use as they please and very little nusiance algae that should be taken care of by the daily landscaping crew.
Instability is where excess ammonia is feeding the algae, your bacteria cant colonize fast enough, and your nutrients are near zero because the bacteria cant produce nitrate fast enough with such a low food source.