Goni won’t open

[sghera64]

+1 on Manganese, Iron. I also dose Strontium and Molybdenum.

I make my own individual solutions from:
MnSO4*H2O: 7 gm in 200 mL RO water makes a 11376 ppm solution
- Adding 1 mL of this to my 718L system raises Mn by 16 ppB
Na2MoO4*2H2O: 2 gm in 100 mL RO water makes a 7931 ppm solution
- Adding 1 mL of this to my 718L system raises Mo by 11 ppB

From what I read and ICP tests on my tank, Fe and Mn are rapidly depleted. I don't worry about measuring them, but I don't carelessly dose either. 1mL of my Mn and Mo solution each week seems to be enough. I dose Fe daily, but I have a chaeto refugium. That sucks iron out and probably some of the Mn and Mo too. I don't know where Sr goes. If I add it, it seems to have a half-life of about 1 day when I test with my Salifert kit.

I dose about 80 mL of live phytoplankton that I continuously grow each day. I also run a skimmer and I use Rox 0.8 carbon for 1 hour each day. System is 20 years old and has a DSB.

 

[HuduVudu]

I make my own individual solutions from:
MnSO4*H2O: 7 gm in 200 mL RO water makes a 11376 ppm solution
- Adding 1 mL of this to my 718L system raises Mn by 16 ppB
Na2MoO4*2H2O: 2 gm in 100 mL RO water makes a 7931 ppm solution
- Adding 1 mL of this to my 718L system raises Mo by 11 ppB

A strange alternative to these, and what I use to dose ...

Pure Iron Filings
Manganese Nitrate

I am not as accurate in my dosing but I dose daily.