Hi
I am a bit confused by the EI mixing/dosing. I have KN03; K2S04, KH2P04 as well as FE chelate 10% and Barr's GH Booster. I want to mix & dose for 65 gallons of water. I have contacted the local water supplier and got the following info.
N03 - 2.2 ppm; P04 .024 ppm; K 2.7 I beleive the next step is to subtracted this amount from the mean taget range suggested by Tom Barr. I have also tested the water with new API kits. I have a PH of 7.6 with a KH reading of 6 and a reading of 5 for K . All other readings are zero

Both tanks are filled with plants and some fish.
More info..... I have been double dosing Excel for about a week to combat BBA. I expect to be on C02 in May of this year. I am also using seachem gravel fertilizers.
My problem ... now what do I do. This is a big challege for a non chemistry hobbist. Can someone assist please?
Thanks,
redtheinspector