Be careful with averages as they can sometimes vary greatly over the year, some elements can vary 100 fold in some water reports. For the nitrate I would use the lowest value for the year or just ignore the waters reports nitrate value, its there more for folk'average' n my area at time of this report (year of 2020) is 12.3mgNO3/L
|chemical||weight of one TSP (g)|
|K2SO4 (not used in APF kit)||6.4|
|MGSO4 - 7H20||5.1|
Thanks Zeus, much appreciated. I agree wholeheartedly with your decision on teaspoon accuracy - I can see why so many Scapers have precision scales; they're definitely on my list. Mind you it's getting to be a pretty long list.I will have a look at it over the next few days. The calculations for APFUK teaspoons was done a long time ago so I can't remember off the top of my head what mass for teaspoons was used, so will need to find the which version the calculation was on, as the present version just states the ppm yields. We decided not to use spoons as a form of measurement as the mass per spoon can vary dependant on the grain size of the salt.
I feel like a right numpty now. I spent flipping ages surfing the net trying to find out what different salts weighed per teaspoon rather than doing this. I'll do this tomorrow and give you your first measured reading.e could do with some verification of some other members mass off each salt/trace from freshly opened bags IMO, ten teaspoons and take average and we will update the calculator ASAP
Where are the values wrong?But yes we was wrong in the valves for the APFUK fert valves ,
I am not embarrassed a single bit since weight of a tsp is dependent of the freshness of the product, if the tsp is flush or not, how finely the compound is grind, air humidity %, grain spacing, is it compacted? etc...So many variables. You see where I am going.a little embarrassing after all the time and effort we spent. How we got it wrong 🤷♂️ ATM
Hey @Zeus. / @Hanuman - is the Remineralisation section part of the downloadable calculator as yet, I can't seem to find it?
EDIT: Scratch that, found it in the DIY section under the first drop down menu 👍
I have done a new Remineralisation sheet which is about 95% done on my side which I believe is more comprehensive, however due to myself and Hani being very busy it will be some time before its released
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I've even added sodium bicarb and sodium carbonate which has been handy in comparing some of the commercial remin agents, although these two salt will be hidden on release or have an extra tick box to active them, as I feel there is no need to use the salts in our tanks and keep the [Na] down.
It even does remin solutions
Make it 100% then I will have 75% left of the work to do. 😅I have done a new Remineralisation sheet which is about 95%
<"It does">. Personally I'd still rather use KHCO3 than NaHCO3.I note using Potassium Carb/Bicarb always pushes the K well above target.
<"It does">. Personally I'd still rather use KHCO3 than NHCO3.
If you were bothered about the potassium content, you would need to use urea (CO(NH2)2) as your <"nitrogen source">, rather than potassium nitrate (KNO3).
Magnesium nitrate would be an option, you should be able to find the hexahydrate (MgNO3.6H2O) pretty cheaply in "fertiliser grade".I did wonder about using Magnesium Nitrate instead of Potassium Nitrate, but the only places I can seem to find it for sale are charging £50 for 10 grams - unless I'm looking up the wrong variant.