reread your post and realized you are probably asking about doing regimens.
This is EI or Estimative index it is for high light CO2 enriched tanks. So this is not what you want but can be used as a starting point. You didn't say what size tank so I' just using below as an example.
50% H20 change-weekly
1/4 Tsp-KN03 3x a week
1/16 Tsp-KH2P04 3x aweek
1/2 Tsp-GH booster once a week
5ml or 1/16Tsp-Trace 3x a week
1-2ml-Fe/Iron 3x a week
To go from EI to low tech you can roughly change the three time a week dosing to once weekly, and divide the doses in 1/3.
Low tech weekly dosing
1/12 Tsp-KN03 weekly
1/48 Tsp-KH2P04 weekly
1/6 Tsp-GH booster once a week
2ml -Trace 3x a week
.5 ml-Fe/Iron weekly
*edit: BTW this isn't my own crazy math, its from Tom Barr, and is just to be used as a starting point.
obviously unless you have a fairly large tank these doses get very small and basically impossible to measure so you will likely have to mix up your own solutions, which is fairly easy.
On the bright side 3 bucks of kno3 will last you years in a low tech tank.