Hmmmm, If it works, leave it alone.

I used to use agricultural fertilizers. I kept a spreadsheet with all their basic constituents, and then let EXCELL find a combination to suit a given final formula.
The next thing was to weigh-off the suggested quantities of each fertilizer, then boil it to remove the soluble content and add it to the mixing bin.
Long job, but the only way at the time to make hydro nutrients in this country.

Glad that's over.

You did not mention calcium in the fertilizer. If you are to grow tomatoes successfully, you will need a calcium source.

Norm

I'm looking at average 44ppm for calcium in the water according to my water company. I will likely need to add calcium nitrate. Maybe add calcium sulfate. Not sure which, yet. Average ppm reading for the water in my area is 214ppm.

There are a few people on this forum who dissolve eggshells in white vinegar, thus making calcium acetate.
You do need a lot of shells though, but . .if you live close to the sea (like myself), you can use seashells instead.

you know 50 grams of eggshells is only about a half dozen.
if you go that route, be sure to pulverize the shells before adding to the vinegar. I don't pick up on that and it didn't seem to work extremely well. Though I will try again once my plants get bigger.

I think for calcium I'm going to just grind up some calcium supplement tablets. Still trying to find a good source of silica.

hydrotheoretical wrote:
I'm going to just grind up some calcium supplement tablets

The calcium base of these tablets is usually water insoluble. You may still need to use acid.

Calcium in any form is notorious for poor water solubility.

That's the primary ingredient in hard water deposits, after all. I just stick with a commercial calcium/magnesium additive. A lot easier that way I think.