What happen to my sps?
 

I got my blue German last week but it was too big to be placed on my rocks so I left it on my sand bed till I had time to move things around n yesterday I notice a huge area of its center RTN. Is this because I left it on sand bed for too long? I fragged a bunch if pieces off it on day 1 and this is also on sand bed but it shows no signs of damage at all. Should I chop up my huge colony or leave it as is and let it encrust the dead part over time ? I really prefer to keep it as 1 big colony if possible =(

http://i1292.photobucket.com/albums/...psdcgr0qx7.jpg

Was that part dead at all before? Cause sometimes big colonys have dead parts that are just in the shaded parts of the corals or did it just start dying

Something wrong with your water params maybe frag below looks like it's on it's way out also what's your water temp.

Agreed. Your other digi isn't looking to good and looks like u have a bit of hair algea. Check ur phosphate.

Nope none of it was dead when I bought it I have pics to prove so. None of the frags from this is in the pic only the colony. Pic is with no lights on so mybe it looks worse than it is but I am battling green hair algae. Just bought one of those API phophate removed bags n it's currently in my sump. My doser's powe supply broke last week so I'm manually dosing till a new one ships in. Alk fluctuating from 7 to 5.4. Should I chop up the colony or leave it n let it encrust? Or does blue German digi even encrust at all?

if water quality is the issue chopping it up wont do anything but just that...chopping it up...it will still stn

if your having troubles with dosers, po4 etc. then thats your issue and would need fixing before anything will heal or grow..

sps are hard corals to keep as in they dont like sudden changes to water quality and especially new pieces as they go through twice as much change just changing tank to tank.

Not to mention an alk level of 5.4 seems very low to me. Im sure that would have something to do with it.

It does another cm in each branching direction!! I'm lost in to what I do. I'm about to do a water change today or Tmr. I can't keep alk steady without my doser.

It died another cm in each direction *

i would cut it or super glue it too stop the RTN and give you time to figure out the water parameter issues