i am staring to notice some "whitening" on my rocks and on shells of hermits/snails

[3bavboys]

good ?
bad ?
my imagination ?

 

[reefkprz]

sounds like coraline fadeing, or algae receeding?

 

[3bavboys]

coraline fading - is thatgood or bad ?
i've been fighting hair algea and high trates - i am on my 3rd week of 30% water changes -
90g fowlr

 

[patandlace]

I would check your calcium and alk levels.