Calcium drop?

[muggle0981]

Recently added media reactor foe gfo

Phosphate have dropped from .18-.21 to .07-.08

Cslcium always tested at like 500

Today tested at 420

Could the corals be absorbing more calcium already?

 

[SomeHappyFish]

Look at the first answer by Randy.

Help! GFO becoming a Calcium magnet

Since getting the Trident I have become more obsessed with numbers than I should be. My Alk has been bouncing between 8.5 and 8.8 and behaves in a very predictable manor. Eg. I dose more ALK I get the reading I would expect. My Magnesium goes between 1380 and 1400 with almost an inverse of logic...

www.reef2reef.com

 

[Randy Holmes-Farley]

Could the corals be absorbing more calcium already?

Only if alk dropped over 11 dKH (or was supplemented) during that time frame.