liverockhelp

i have about 75pounds of live rock in my 55gallon reef tank and some of my live rock has color on it and some dont the tank has been up for about 5 months and it seems like the color is not takeing off dont make any sences all my corals r doing fine and all of my water leves r good but my cals is a litte high its at 650 but i am droping it down to 500 so any info anyone can give me would be geart thanks:D
 
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