sps bleached tips and pale

[Reeferluke]

My tank is a mixed reef with sps everything was growing fine then a month ago I started getting some very pale sps and now some burnt tips. I am out of ideas what is causing this my tank is as follows
72gal bow front, evergrow d120 leds, mag 9 return, wp10 and a rw8 for flow. I use Foz Down ( lanthum chloride ) for phosphate and a tlf for carbon. Also dose acro power 5ml a day

Cal 415
Mag 1350 was at 1275 but brought up in the past month
Alk 143
Dkh 7.99
PO4 .01
Nitrate 0

Any ideas fellow fish nerds? Thanks

 

[Ou8me2]

What percentage are you running the lights and how high off the water are those lights? Could be as simple as too much light.

 

[Reeferluke]

What percentage are you running the lights and how high off the water are those lights? Could be as simple as too much light.

Lights are 12 inches off the water and running whites at 50 and blues at 75 % I was thinking the same so I turned them down to the 50 and 75 that they are at now. Did this 2 days ago so too soon to see a difference.

 

[Ou8me2]

I would go down to 30% on whites and see if they recover. Probably turn the blues down also. Takes a heck of a lot longer to kill a coral with low light, than too much light. If you can post a picture that might help also.

 

[bmullikin1]

other possibility could be the lanthum, might have brought down your phosphates too quickly

 

[Reeferluke]

other possibility could be the lanthum, might have brought down your phosphates too quickly

I don't think the lanthum brought it down too fast but I do think that my phosphate is to low. I try to keep it around .03 maybe I'm starving the coral with the po4 at .00 -.01