That 106.46grams will treat many, many water changes.
Everyone's usage is different. I have 5 tanks, some 60L and some are 100L.
And that 106.46gms will last me a year. Whatever your usage is, have confidence in the fact that it will cost you way less compared to buying an equivalent Seachem Equilibrium or Salty Shrimp or any other purchased product.
The 106.46gm added to 500ml of RO water is the base line.
There is nothing stopping the user mixing larger quantities. If you wanted to mix it into 2L of water than it's just a matter to multiplying 106.46gm of the premix by 4.
I have left it up to the you guys and how you want to handle quantity. Just multiply the base 106.46gm premix by the amount you want to mix.
Dissolving the premix powder into 500ml of water is just for ease of use. It's a bit more difficult working with powdered remineralisers.
I just use a syringe to measure out the same amount each time to get my RO water from 0 to 150TDS. Saves me a lot of time when you have as much water changes as I have to do. AND it's more accurate.
There is also nothing stopping people using it in powdered form. The choice is yours.
Nothing wrong with that list.
Just want to make sure you know Calcium Carbonate will increase GH, KH and pH. So this is for Neocaridina.
And Calcium Sulphate increase GH, but not KH/pH. So this is for Caridina shrimps.
I'm sure you know, but it doesn't hurt to repeat it.
The Manganese, Potassium and Iron is only needed in very small quantities. Can you find smaller bags?
If not, you could always use some in your garden.
Good luck, and it would be great to hear your feedback.