Hi,
I was just on James planted tank, calculating how to make my EI mixture.
I've noticed that by adding the ammounts he says, that i cant get potassium up to anywhere near 30ppm.
I have 180 litre tank, and i wanted to dose:
KN03 - 60g per 250ml @ 10ml 3x per week = 24ppm Nitrate & 15ppm Potassium (per week)
KH2PO4 - 10g per 250ml @ 10ml 3x per week = 4.5ppm Phosphate & 1.8ppm Potassium (per week)
Which equals:
Nitrate @ 24ppm / week
Potassium @ 16.8ppm / week (Is this a sufficient amount? I'm going for a high tec co2 tank)
Phosphate @ 4.5ppm / week
I was going to also add
K2SO4 - 50g per 250ml @ 10ml 3x per week = 15ppm Potassium
This would bring the total up to 31.8ppm / week, is this correct?
Also, i've noticed magnesium, but none of the EI guides mention adding it? Is this added by manganese in the trace elements or is it usually in the tap water. Am i likely to see plant deficiencies if this level is correct?
Cheers, Andy
I was just on James planted tank, calculating how to make my EI mixture.
I've noticed that by adding the ammounts he says, that i cant get potassium up to anywhere near 30ppm.
I have 180 litre tank, and i wanted to dose:
KN03 - 60g per 250ml @ 10ml 3x per week = 24ppm Nitrate & 15ppm Potassium (per week)
KH2PO4 - 10g per 250ml @ 10ml 3x per week = 4.5ppm Phosphate & 1.8ppm Potassium (per week)
Which equals:
Nitrate @ 24ppm / week
Potassium @ 16.8ppm / week (Is this a sufficient amount? I'm going for a high tec co2 tank)
Phosphate @ 4.5ppm / week
I was going to also add
K2SO4 - 50g per 250ml @ 10ml 3x per week = 15ppm Potassium
This would bring the total up to 31.8ppm / week, is this correct?
Also, i've noticed magnesium, but none of the EI guides mention adding it? Is this added by manganese in the trace elements or is it usually in the tap water. Am i likely to see plant deficiencies if this level is correct?
Cheers, Andy