Not consuming mag and calcium

[Scottm032]

My tanks is newish. Lots of stony and soft corals. Been running about 5 months now. I add 50 ml/day ALK via doser. I been testing cal and mag this entire time and they’ve both been off the charts the entire time.

Why am I not consuming these elements??

Pic added to show what’s in there

 

[Randy Holmes-Farley Verified Community Expert]

My tanks is newish. Lots of stony and soft corals. Been running about 5 months now. I add 50 ml/day ALK via doser. I been testing cal and mag this entire time and they’ve both been off the charts the entire time.

Why am I not consuming these elements??

Pic added to show what’s in there

Numbers are needed.

How much alk is dKh per day? What calcium level and is it still the same as your salt mixc?

Calcium moves much more slowly than alk, and magnesium moves glacially slow.

Coral calcification uses 2.8 dKH for each 19-20 ppm of calcium and only around 1 ppm of magnesium.

Accumulating nitrate and sulfur denitrators deplete alk and not calcium.

 

[thatmanMIKEson]

My tanks is newish. Lots of stony and soft corals. Been running about 5 months now. I add 50 ml/day ALK via doser. I been testing cal and mag this entire time and they’ve both been off the charts the entire time.

Why am I not consuming these elements??

Pic added to show what’s in there

what is that 1" pvc coming down the wall on the left side ?

 

[Scottm032]

what is that 1" pvc coming down the wall on the left side ?

3/4 pvc piped from my WC tank in the garage.

 

[Scottm032]

Numbers are needed.

How much alk is dKh per day? What calcium level and is it still the same as your salt mixc?

Calcium moves much more slowly than alk, and magnesium moves glacially slow.

Coral calcification uses 2.8 dKH for each 19-20 ppm of calcium and only around 1 ppm of magnesium.

Accumulating nitrate and sulfur denitrators deplete alk and not calcium.

Thanks Randy. Good information to consider