Coral growth but losing color

jdm4jeremy

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I have this piece of digi and a piece of Acro that I’m getting growth but slowly losing color.

nitrate-0.4
Ammonia-0
Phosphate-0.2
Cal-450
Mag-1300
AlK-8.5

Lights- reefbreeders 48” photon v2 on a 75 gal 48” long tank. Getting 350 par up top center and 130-150 down on the sand! I’m thinking either my phos,nitrate are too low or do I really need T5’s to successfully grow beautiful SPS? Suggestions please! Also I know I have to have more phos and nitrate than what I’m testing because I have hair algae growing. I have a Cuc of 2 urchins, 10 Astrus Snells, 2 big turbos,10 hermit crabs and 1 green emerald.

IMG_4244.jpeg IMG_4759.jpeg
 

TX_REEF

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I think it's normal for the white skeleton to grow first at the tips and then the zooxanthellae will encrust/inhabit it
 
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jdm4jeremy

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what are you testing NO3 and PO4 with?

Hanna or box kits?

i'd say low nutrients would be the culprit
Using the Hanna all in one for everything except calcium and magnesium. For those two I use salifert test kits nitrate is HR test on the Hanna
 

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