Answer me this, please: I just flipped over a rock that had some nice pink/purple coralline on the bottom of it and two days later that coralline is no longer that color.
Flip it back over. It'll turn pink again.:joy: It likes lower light and you just gave it "brite light brite light".
White can be from high/low PH or ALK. I dont know if you can have too much calcium though.
Ph and Aalk would not turn it white that fast. Low alk and high calcium would make your tank like one of those little balls that you shake and the snow falls all around. It would fall right out of the tank. So, yes you can have to much calcium.
The algea tends to get bumpy white so it can spread...kind of like coral.
Never heard this. It spreads fine in my tank wwith out turning white. Sometimes it does turn white yes, but most of the time theirs a problem with the chemistry.
My pH is 8.2. At least that's what the color says. My salinity is 1.024. I would think that if the lighting was too low that I wouldn't have any coralline, but it seems to grow better in shaded areas.
Sounds ok and your right on shaded areas.
Should I add some 8.3 buffer, just to make sure?
No don't mess with a good PH.
If you don't have an Alk test, you might want to go out and get one.
I agree hear.
What does it mean for your Alk, if your calcium is 500? Aren't they connected in a way?
Yes, I secpect that the alk is low with high calcium.
From what I've read (and I did try dosing some calcium but that went nowhere) can't really have good calcium numbers without having good alk.
Oh no, the numbers can be way out af whack. read this.
http://www.advancedaquarist.com/issues/nov2002/chem.htm
Dan