Hades Down Quart This blend of organic acids lowers your nutrient solution's pH. It's our pH down. Don't worry if you over shoot the down: just add some Olympus Up and see the benefits of adding more calcium.

Olympus Up Quart One of a kind in the industry. Olympus is derived from micronized limestone designed to not only raise the pH of your nutrient solution, but also to buffer organic acids from healthy soil decomposition. The calcium in Olympus is also