SeaChem ferts

[benkho]

is it hard to estimate the dosage of NPK into a planted tank?

i am used to having the mixed one by seachem. now would like to try having the individual types rather than mix..cheaper right?

[jacian]

If you are using Seachem products, you may want to follow their suggested dosing below
http://www.seachem.com/support/PlantDosingChart.html

Else you may refer to online calculator http://www.fishfriend.com/fertfriend.html or http://www.csd.net/~cgadd/aqua/art_p...osage_calc.htm to calculate the dosage amount.