Corraline algae dissapearing :(

[Flow863]

A few weeks ago i was getting real good corraline growth on my dry rock
But i noticed yesterday that is dissapeared
My calcium is 420
Dkh 10%
What gives?!?!?
>_<

 

[Mpfaff77]

Try kent purple up. I have actually stopped using. Too much coralline.

 

[MacDracor]

Coralline is very sensitive to changes in chemistry, temperature, and light. For example, you can find numerous threads about someone changing their lights and all the coralline dying off because the new bulbs are full strength. I've just come to expect the coralline growth to wax and wane as things change in the tank.

 

[Flow863]

I just replaced my bulb about 2 or 3 weeks ago so that may be it
thnx alot
=)