is it normal for tips to be a bit lighter?

[Skeptic9962]

im new to SPS and got quite a few frags in my new tank that i recently got..everything seems to have great polyp extension day/night and my cali tort is getting darker since i got it but for some reason the tips of a few of then are getting lighter in color not white but just a bit lighter...there is no predators in the tank all i have at the moment in tank is fairy flasher wrasse, yasha hashi goby, 3 pepermint shrimp and cleanup crew

everything tests out good aside from nitrate...

PH- 8.3
alk - 9dkh
calc. 420
nitrite- 0
nitrate -15 (trying to get this down 'new tank' )
amonia- 0
phos - 0
temp- 79-80

ive been running carbon and changing it out every week with weekly 5gal. waterchange. It seems to be the few that are a bit higher in the tank 1/3 top of the tank the rest of the tips arent lighter....the light i have on it is a 150w 14k pheonix (3 months old) with (4) 24w T5 attinics this is over a 32 gallon that is 24in deep and hung about 4-5 in off the tank.

dont think this has anything to do with it but i get quite a bit of micro bubbles from the new skimmer i know that this is considered a myth but is it at all possible for it to hurt anything? ive read alot about it and it seems to be a busted myth but just double checking with you guys also

 

[91YOTA]

sounds like new growth...

 

[returnofsid]

Perfect sign of healthy, new growth!!

 

[kevinpo]

Hello,
Many stony corals (especially Acropora sp.) can grow faster than the zooxanthellae can reproduce. This results in the new growth tips being lighter or a different color (most commonly blue).

Regards,
Kevin

 

[Skeptic9962]

aw ok sweet yeah was getting worried =P but the tips of most of them is a light blue thanks for the input guys

 

[Katchupoy]

Picture would be awesome too...