ENVY Hydro Special, Veggie and Herb Combo Kit, 1.5 Pound - Hydroponic Plant Fertilizer - for Indoor and Outdoor Plants, Professional Grade, Water Soluble, Made in USA

I found these as an alternative to the minerals purchased through Lettuce Grow. They work great so far!

I bought a compact hydroponic Gardyn system in April. Despite following directions to the letter, my tower was overwhelmed with algae, bad odor, and struggling seedlings. It seemed like the nutrient solution wasn't ideal, and some research led me to the ENVY system. I bought this combo package, and used it for my first water change. Within days, my struggling plants began to thrive. I have been using the ENVY system, enhanced with Epsom Salt/magnesium, for the last 4 months, and I have more salad greens that I ever dreamed possible. The process is a little more involved - with 2 steps, the fertilizers need to be separately weighed and dissolved. But that's a minor hassle to me when the results have been so positive!

Works amazing as a 3-2-1 supplement