Live rock changing color or dying

[jroescher]

Yes, they will recover and grow again. Run it a few weeks and test for Nitrate and Nitrite levels to return to 0 before adding anything else.

And yes, it will spread to all the other rocks, glass, pumps, and anything else exposed to light in your tank. You just have to be PATIENT!!

[dabudkrew]

thanks, how do i know whats going to grow?

[DaBird47]

it's Diatom algea, part of the normal cycle...Keep up with your water changes and Welcome to Maast...

[Jeff]

to get coraline algea to grow better and faster, have your calcium at over 400ppm and run almost all actinic lighting. for some reason coraline grows better with actinics only.