Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
Here is the concept:
1) Figure out how much fertilizer you will be giving the tanks over a one week (or 2 week, or whatever) period.
Here is a copy of the recipe stickied at the top of this forum.
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
"If dosing a 10gal highlight C02 enriched tank,
divide above regime x2"
2) Put that much into 2 containers.
a) KNO3+ KH2PO4 + K2SO4 (if you are using it)
b) CSM+B and Iron
3) Do some figuring:
Add up all the gallons of all your tanks.
Divide by 3. Multiply by how many days' worth you are making.
Put that many milliliters into the bottles. (ie: if you have 60 gallons worth of tanks, then put 20ml of water into each bottle for each day you will dose)
4) Dose is 1ml per 3 gallons of tank volume.
Dose macros 3 days per week, and micros the other 3 days.
If the tank is a moderate light tank, then just skip a day, and dose 2 days of macros and 2 days of micros.
A low light tank might just be dosed one day of macros, and one day of micros.
A high light tank is better dosed more often, rather than adding several days worth of fertilizer all in one day. The every-other-day schedule seems to work really well.
If you need more help, then tell us what size tank or tanks, how much light and CO2 you are giving them, how well planted they are, and what does the NO3 test show through the week. Is NO3 accumulating between water changes? Or dropping?
Last edited by Diana; 06-14-2015 at 03:09 PM.