Acro?

[USMA36]

I have this unknown acrpora frag. I am pretty sure it’s supposed to be green but it looks like this instead. The tips are white. ALK 7.5 nitrates 5-10 phosphates 0.0 on Hannah checker, Temp 78, salinity 1.026, calcium 420. It’s about halfway up the a 90 gallon under an ATI Sunpower 8 bulb fixture about 10” over the water with 4 Blue+ 2 True Actinic 1 Coral + and 1 Purple +. I attached a picture of the mother colony as well as the frag. The branch to the right cracked when I was glueing it probably why it looks worse.

 

[vpoiu1263]

The first pic is look like garf bonsai acro.
But I don't know about the second one sorry.

 

[USMA36]

They’re supposed to be the same.

 

[jda]

It looks like it is encrusting and growing, so it is probably OK. Some frags look different than colonies and change as they grow - Dana Riddle had some paper (which I have not read yet) that shows that some corals get different zoox as they mature.

What lights are the colony under? I gave a frag of a Typical Shortcake to a guy with AcroOptics lights and mine is green/pink like every other shortcake and his was just grey with greyer tips but has grown to the size of a dinner plate... he switched to ATI and it looks like a shortcake again. Different lights yield different colors.

 

[USMA36]

It was encrusted when I got the frag. I have not noticed very much of any growth, but it’s only been a month. Original colony was under radions. I have the frag under an 8 bulb ATI Sunpower T5. Are the white tips growth or bleaching? Is there a way to tell?