(I debated putting this here, but as I make nothing on this, I figured it might get more attention here. Mods feel free to move, if desired.)
Folks often get confused about how much fertilizer to mix, or how to use one that has absorbed a lot of moisture from the air. Then there are the more specialized formulas that are non-uniform blends of particles of different sizes and shapes.
I encourage folks to make fertilizer concentrates and dispense those, as it eliminates all those issues.
I have just acquired a small number of large Bettix bottles and are offering them with pre-measured bags of K-Lite fertilizer, enough to make two, 2-quart batches of concentrate, which translates to 128 gallons of 100 ppm N solution for weekly application. Dump one bag in the larger side, add 2 quarts of water, replace the cap and shake. Remove the small cap and squeeze the bottle to dispense up to 4 ounces of concentrate (use 1 oz/gal) into your watering bucket and dilute it for application.
The selling price is my cost plus the cost of shipping.
And... if you later decide you'd rather use a different fertilizer, I have provided a simple refill volume chart for several, commonly used formulas.
K-Lite Concentrate Starter Kit › First Rays LLC