That is so cool about your Mom going to school here.
Okay I think I understood what you wrote but have one follow up question. Does waiting 24 hr to dose the CMS+B remedy all that in regards to iron? Or should I still supplement with the Seachem Iron?
How much would you say I should dose the Seachem Iron in a 200L tank. Medium lighting/EI dosing and CO2 is added.
edit: forgot to mention substrate is seachem flourite black sand, if that make a difference to the iron