How my Regime works:
these numbers stays constant (During 100% RO water Mineralization):
Ca. 10
Mg. 3-4
these numbers can vary:
N 1
P 0.13
K 0.8
if you add 0.5 ppm N daily, which will also add 0.4 ppm K and 0.065 ppm P. these numbers are likely to be up taken daily (estimated), next day you are starting with 0 N, P, K all over again (estimated), you dose 0.5 ppm N, 0.4 ppm K and 0.065 ppm P again. I for example add 1 ppm N, 0.8 ppm K and 0.13 ppm P every other day, which comes up to 3 ppm N, 2.4 ppm K and 0.39 ppm P weekly. please, keep in mind that these are estimated numbers of uptake under high light, co2 enriched aquarium with several plants. the numbers would be far less if this was to be dosed in low tech setups.
This is weekly dose for Micros/Fe:
Fe 0.1
Mn 0.067
Zn 0.014
B 0.014
Cu 0.007-0.014
Mo 0.004
I sometime target 0.05 Fe weekly from the above. I might be able to get away with such numbers due to DTPA and HEEDTA, this may vary for some users.
In another word if one were to dose this style below:
Mon: N 0.5 ppm, P 0.065, K 0.4 ppm, 0.025 Fe
Tue: N 0.5 ppm, P 0.065, K 0.4 ppm
Wed: N 0.5 ppm, P 0.065, K 0.4 ppm, 0.025 Fe
Thu: N 0.5 ppm, P 0.065, K 0.4 ppm
Fri: N 0.5 ppm, P 0.065, K 0.4 ppm, 0.025 Fe
Sat: N 0.5 ppm, P 0.065, K 0.4 ppm
Sun: N 0.5 ppm, P 0.065, K 0.4 ppm, 0.025 Fe
weekly water changes aren't required but will be beneficial, my tank is about 50 gallon, I change 25 gallon. I mineralize the 25 gallon fresh RO water to Ca 5, Mg 1.5-2 before adding it to the aquarium.
Total:
N 3.5
P 0.455
K 2.8
Fe 0.1
as of right now, this is my dosing regime, it is subject to change with the new experiments and new findings.