I typically add ferts dry.
To a 42 gal tank:
1 tsp = 5 mls metric
1/2 teaspoon KNO3 maybe 2x a week till it fills in, then 3x a week
1/8th teaspoon K2PO4 2-3x a week
Gh booster 1 teaspoon after water change only
Traces: I do make a stock solution of this, add some Excel or generic equivalent to prevent fungus, other things potassium ascorbate or HCL etc.
Follow the typical protocols, maybe 10-15mls 3x a week.
50-70% water change once a week, 2x a week if there;'s any issues, tweak CO2 from there.
That's it.
Not much harder than baking cookies, and you can not burn the plants.
After you run through this 2-3 weeks, it'll be "old hat", boring even.
Most of your effort should be one good light(not higher light), current and CO2.
Keep things clean, filters, any leaves etc.
It's not complex or anything(how to grow plants), for all the carrying on folks do about it.
Regards,
Tom Barr