Nick potts
Member
Hi all.
Looking to clear up some confusion over my fert weights and dosing.
I am using the APF starter kit and mixing as per there instruction (4tsp KNO3, 1tsp KH2PO4 and 6tsp of MGSO4), now according to the IFC calculator the APF provides 14.7ppm NO3, 4.2ppm of PO4 and 7.3ppm of Mag per week, i have been wanting to up my levels to closer to full EI on the KNO3, CA, MG and K, so got a recipe ready and weighed all the powders out.
Now the issue i have is that according to the calculators i should be adding less ferts to my dosing bottle than i was before?? Is this just a miscalculation on the IFC sheet or am i missing something? @Zeus.
For example i want to target around 25ppm KNO3, which should be 17gram in 500ml with a 10ml dose x3 per week, this is about 2 teaspoons and before i was adding 4, I am unable to get any nitrate reading at all in the tank and seeing some deficiencies i think, hence why i am upping it (I know about test kits being rubbish )
Cheers
Looking to clear up some confusion over my fert weights and dosing.
I am using the APF starter kit and mixing as per there instruction (4tsp KNO3, 1tsp KH2PO4 and 6tsp of MGSO4), now according to the IFC calculator the APF provides 14.7ppm NO3, 4.2ppm of PO4 and 7.3ppm of Mag per week, i have been wanting to up my levels to closer to full EI on the KNO3, CA, MG and K, so got a recipe ready and weighed all the powders out.
Now the issue i have is that according to the calculators i should be adding less ferts to my dosing bottle than i was before?? Is this just a miscalculation on the IFC sheet or am i missing something? @Zeus.
For example i want to target around 25ppm KNO3, which should be 17gram in 500ml with a 10ml dose x3 per week, this is about 2 teaspoons and before i was adding 4, I am unable to get any nitrate reading at all in the tank and seeing some deficiencies i think, hence why i am upping it (I know about test kits being rubbish )
Cheers