What are you adding to your tank?

[Mike-fish]

Wouldn't you know my previous statement bit be in the a**. Alk is now low probably ca2+ oh well coulda seen that coming holding corals for dad since he has phosphate issues currently so looks like water changes for me

[Rice Reef]

I add bulk sodium bicarbonate, calcium chloride, magnesium chloride, magnesium sulfate, vodka and vinegar. I also add Brightwell Potassion, Reef advantage strontium and Reef iodide. For salt I use IO.