Thank you! Each tank is unique, you must find the correct dosage of fertilizers (including CO2) for conditions of your tank...this is the secret ...CO2 is very important, becouse affects level of Ph, and fertilizers is absorbed by the plants with diferent speed, depending of Ph level
(low Ph=very fast absorption, high Ph=low absorbion), and light is very important (low light=low absorbtion of nutrients/fertilizers)
You must have the strength to decide what is best for your tank!