Seems like I'm in the minority who thinks that just putting .37g of potassium bicarbonate in each gallon jug of distilled water is easier than making a separate concentrate haha

I can't speak to majority/minority, but I find it ridiculously simple to keep a small quantity of concentrate in the fridge. Then when preparing a gallon of water, a 1 ml eyedropper makes fast, simple work of it.

That's my method too (500X concentrate). I use 3ml pipettes rather than an eyedropper, and mix up as much rpavlis water as needed. Much faster than weighing.

Here's my method:

17g Potassium Bicarb into a 1L glass bottle of distilled water. Into the fridge it goes.

4 teaspoons of concentrate into 1 gallon distilled water.

I do like simple.

I don't have access to distilled water but I have access to water bottles that are extremely low in mineral contents (in mg/l: Potassium : 0,22 ; Magnesium : 0,44 ; Calcium 1,7 ; Chlorures : 0,44 ; Sulfates : 2,1 ; Nitrates : 5,2 ; Silice : 4,1 so for a total of 14g dry residue, ph 6 and tds 15).
Would it make sense to follow the same recipe of 10g of Potassium Bicarbonate dissolved into 1000 ml of this bottled water then add 10mL of this solution per 1L of this bottled water? Or am I missing something? Maybe 9 or 8g of Pottasium Bicarbonate instead of 10g to take the other minerals in the bottle water into account?

^^^^
Yes, that recipe makes sense. Your bottled water is low enough in minerals and is very low in worrisome chloride (chlorures) so you can use it in recipes that normally use distilled. Your bottled water's numbers don't include bicarbonate, but based on the other numbers you know that it has a total hardness around only 6 mg/L CaCO3, and should have an alkalinity slightly less than that. So you could add 9 ml of your concentrate to bump the alkalinity up by 45 mg/L, but are also fine adding the full 10 ml -- if you end up at 55 mg/L total bicarbonate alkalinity as CaCO3 that''s perfectly fine.

Thanks I'll try that! Didn't know that potassium bicarbonate was also going to be really difficult to find here, I've been to 4 pharmacies/drugstores already and none has it, only sodium bicarbonate, I'll order it online.

whatsamonad wrote:Seems like I'm in the minority who thinks that just putting .37g of potassium bicarbonate in each gallon jug of distilled water is easier than making a separate concentrate haha

This is what I do.

RJB83 wrote: This is what I do.

same here, I started doing this a while ago...if only to put that dope dealer scale to use as it sits idle since I finetuned the timer on the grinder.

whatsamonad wrote:Seems like I'm in the minority who thinks that just putting .37g of potassium bicarbonate in each gallon jug of distilled water is easier than making a separate concentrate haha

+1