)Thank you, at my drugstore, I can have almost everything that makes up the csm + b except perhaps the molybdenum, I imagine that it must be complicated to make yourself? also, for the iron there are several types, can't find any mixTechnically yes, as it contains PO4, however I would not use it without going by our Expert @dw1305 and/or our Chemist @X3NiTH. (they should answer soon
I sure there is a good reasons why we don't use it apart from the Na and it having no K.
As to CSM+B any good trace mix should do as CSM+B is so expensive, post what you can get your hands on and will take a look
You could use dipotassium phosphate (K2PO4). Phosphate compounds are <"largely insoluble">, so you only really have the group one metals (and ammonium (NH4+)) as cations. <"Phosphate buffers"> might be an option ?
Yes, it is pretty unsuitable.
pottasium nitrate, monopottasium phosphate and the micro mix and you should be good to go.
What about Magnesium or calcium, not needed ? thx
Do you have <"very soft water?"> If you do? you may need a calcium (Ca) salt (usually CaCl2.6H2O). If you don't have very soft water, you don't need the potassium carbonate (K2CO3). You will need to add some magnesium (Mg), most water in W. Europe doesn't contain much for <"geological reasons">.
i'd just add some Magnesium perhaps 10-20 ppm you have more than enough calcium. you can add in daily fert dose or at water change once per week, or both.
thank you, is there any guide for EI mix ?
there is a good one on barrreport The Estimative Index of Dosing, or No Need for Test Kits
Hi @dw1305 / @Zeus. For the Ca part of GH, what do you think about using Calcium Sulfate (CaSo4 or Gypsum) instead of Calcium Chloride (CaCl2) ? I am asking because I saw a mention somewhere that Chloride may not be good for the plants at elevated levels (whatever that level is...). I have been using CaCl2 / MgSo4 for 3 months now to target ~5.5-6.5 GH and haven't noticed any issues, so I am just wondering if there are any benefits or drawbacks either way? FWIW with CaSo4 for the same amount of Ca ppm I would add ~23 ppm of Sulfate vs. ~40 ppm of Cl with CaCl2 (I don't add any other Cl except for what I get from my KCl softened tap water...).
Hi @Zeus. Thanks for the chart. As a non-chemist I am trying to understand the implications of the solubility level as it relates to our dosing, plants etc. Does it mean it's not as efficient for the plants/livestock and we have to use more to get the same effects vs a different compound ? or is it that it just takes a longer time to dissolve in the water column and eventually becomes just as efficient as a compound with a higher solubility level?
