Sps dying off

[Kial]

I bet it’s your lighting, so the schedule will help. If you have your whites above 30 then you’re probably frying that coral and all future acroporas. I’m a hydra user too and have a lot of experience, unfortunately, with what your going through.

This is my schedual

 

[Kial]

would still have imagined the upper parts to be affected first if its the lighting and would also see bleached (very light) tissue color which is not the case here. How are other corals doing in the tank? have you had any parameters swing lately? maybe few water changes, running carbon, making sure all is working ok and if you still have issues maybe an ICP test can shed some light on some issues.

I have some a zoa colont not opening but another colony that is fine. Some duncan heads are dying but other than that everything is good.

No swings from what I've seen, I do weekly water changes of 10%

Also Run carbon in a bag in sump

 

[Kial]

I bet it’s your lighting, so the schedule will help. If you have your whites above 30 then you’re probably frying that coral and all future acroporas. I’m a hydra user too and have a lot of experience, unfortunately, with what your going through.

Forgot to add photo

 

[Charlie’s Frags]

Those settings are way too low for hydra 26’s on a tank that size. Your corals are starving from not enough light for a long enough photoperiod. My tank is half your size with 2-52 HD’s delivering 230 total watts, 600 par at the top and 350 on the sand for 8.5 peak hours. Corals, especially sps, receive their nutrition from the sugars during photosynthesis. Get rid of those peaks and valleys because it’s screwing up the spectrum and dropping the par way down.
Here’s mine

 

[Charlie’s Frags]

would still have imagined the upper parts to be affected first if its the lighting and would also see bleached (very light) tissue color which is not the case here. How are other corals doing in the tank? have you had any parameters swing lately? maybe few water changes, running carbon, making sure all is working ok and if you still have issues maybe an ICP test can shed some light on some issues.

Not enough light causes death from the base

 

[Kial]

Those settings are way too low for hydra 26’s on a tank that size. Your corals are starving from not enough light for a long enough photoperiod. My tank is half your size with 2-52 HD’s delivering 230 total watts, 600 par at the top and 350 on the sand for 8.5 peak hours. Corals, especially sps, receive their nutrition from the sugars during photosynthesis. Get rid of those peaks and valleys because it’s screwing up the spectrum and dropping the par way down.
Here’s mine

Ah that could be the issue then! I did have the % higher before but turned them down (coral was already dying). I'll get rid of those peaks as well.

Should I just slowly increase?

 

[Charlie’s Frags]

Honestly I would frag the top half of the area with healthy tissue and cross my fingers. She’s probably not going to make it. As far as your settings go I would crank b,ry,uv,v to 100 r and g to 10 and adjust your white to what looks good to your eye. I wouldn’t go above 35 on the white though. The whites are what fry corals. All of your lps will fine switching. Sps will stress with a change like that but if thats the only one I would give that thing more light asap.

 

[vetteguy53081]

2x hydra 26s for lights. In probably highest flow area of my tank

How did you acclimate it initially? Also reduce flow slightly, Lights at 75% Blue and 20% white and the coral does not look bad and does have a chance.
The bottom may be bare also from shading whereas the base is not getting enough light which is Not abnormal

 

[Kial]

How did you acclimate it initially? Also reduce flow slightly, Lights at 75% Blue and 20% white and the coral does not look bad and does have a chance.
The bottom may be bare also from shading whereas the base is not getting enough light which is Not abnormal

It went in when I I had my old lights (standard aquaone ) and then few weeks later I upgraded to hydras and had it on acclimation mode.

I've got it on 95% now so will have to turn it down again after work.

I'm hoping it can come back as it still has the polyp extension etc