Hammer Coral losing color ..

[JAWSIII]

Hi.

I have a hammer coral ( green stems blue tips) that I have had in a 10 gallon AIO using a AI prime for lighting. The hammer was doing very well in the 10 gallon see pic 1.

about 6 weeks ago I purchased a used 60 gallon with a sump. I set it up and cycled it thru. I made sure the parameters matched between the old 10 and the new 60 and after a few weeks and I was sure the parameters were the same I moved the hammer over. It has been 3 weeks since I moved it.

it seems that it is extending fine and and looks healthy. However the color seems to be less than when it was in the 10 gallon.

My tank parameters are now ( and also in the 10 gallon )

ph 8.0
Cal 460
Alk 9.2
Mag 1350
Salinity 1.027
Temp 78
Nitrate 5-10 ppm
Nitrite - undectable
Phosphate 0.3
Amonia- undectable

I am using the same light ( prime ) with the same light program the only difference is that on the 10 gallon I ran the light at 50% capacity on the 60 I am running it at 75%

pic i2 is 10 gallon pic

pic 1 is the 60 gallon

 

[blaxsun]

It's hard to do an apples to apples comparison because the lighting is different in the images and the positioning of the hammer is different as well. It still looks healthy, but again - the image on the top seems to have been taken with more blue than the bottom image. Without a PAR reading between the tanks it's also hard to say whether you're getting the same amount of light.