Brownish yellow Rocks
So I've been noticing more and more lately that my rocks are turning a brown/yellow colour. I was expecting more of a purple colour. My tank is about 3-4 months old. The rock I chose to use was macro rock. I also purchased live rock off a fellow canreefer to seed the macro rock. Everything in the tank is happy and healthy. All paramaters are in check as well.
I guess my question is this. Is it normal for my rocks to turn this colour?
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