Dying horn coral! Help!

[Bradsreeeftank]

So i hade this green branch horn coral for 2 weeks and it never came out, now im just noticing a purple looking flesh at the bottom of coral! What should i do? My parms are nitrates and nitrites 0, mag 1700ppm ( im killing algea), my calc is at 600ppm and alk is at 8.5 DKH! i no my parms arnt perfect but i cant lower calc! So whats bothering it? And will it die or is it normal to see some flesh near the bottom!?

 

[Tahoe61]

Hydnophora are hardy corals, post an image please.
Are you dosing anything other than Mag? Consider letting the Mag drift back down to 1600 and if it still treats the Byropsis. What type of Mag are you using?

 

[Bradsreeeftank]

Ok thanks bud, i have image for you.

Best image i could get, i been dosing with kent tech magnesium

 

[Tahoe61]

Yeah it's loosing tissue. What coral is right next to it?
Do you have any idea why your Ca is so high and has it been high awhile?

 

[Bradsreeeftank]

yeah its been high for awhile about 2-3 months. i recently switched to non dimmable rapid leds and am thinking it might be to powerful. Do you have any idea what i can put under my light to dim it?

 

[JMSKI333]

What are you testing your water with? If your Calcium is truly 600ppm, then your Alk should be reading at about 33-34dkh (not likely). There is a balance between Alk and Calc and the numbers will not go up that high without the other following. Either your Calcium reading is off, your Alk reading is off or your one of your test kits is out of whack. My money is on your Calc test. If your Alk is really 8.5 dkh then your Calcium is in the 420ppm range which is more likely the case.

Also, how do know know your mag is that high? Most test kits I have seen can't even test that high. Either way, I have never seen mag that high before. I would start with a 20% water change to bring things closer to normal.

Disclaimer: I barely passed chemistry in high school.

 

[JMSKI333]

yeah its been high for awhile about 2-3 months. i recently switched to non dimmable rapid leds and am thinking it might be to powerful. Do you have any idea what i can put under my light to dim it?

Put 3-4 layers of regular window screen from HD. Pull a layer off a week until your corals acclimate to your light.

 

[Tahoe61]

No I am not familiar enough with those kits to make a suggestion.
I am trying to help but I still do not know if the coral right next to the hydnophora is stinging the base of the hydnopora?
No idea how your calicum got that high or why it's staying that high?
Others will want to know what test kit you're using?

If you believe that none of the considerations I have mentioned are the cause, and that the lighting is too intense move the frag lower not directly under the lighting. Or use the method mentioned above.

 

[Bradsreeeftank]

im using a red sea test kit, i will test calc and alk again tommarow. And i cant do the screen i dea because it keeps sagging in water );

 

[JMSKI333]

im using a red sea test kit, i will test calc and alk again tommarow. And i cant do the screen i dea because it keeps sagging in water );

Raise the light up and shorten the photo period if you truly feel it is the light. Slowly lower it down and gradually increase the photo period.

Red sea has been known to get a bad test kit here and there. I use them myself.