Ona PRO Gel, 1 qt active air Always check the EC levels

Always check the EC levels and flush when required

Do not add to existing solutions

It works by forming a membrane around roots and protecting them from harmful bacteria and fungus

If your pre-filter is dirty or discolored

In the eighth to ninth week of the plants life cycle

Ona PRO Gel, 1 qt active air Always check the EC levelsONA PRO is new and exciting! These are prefessional grade products. The first product in this series is ONA PRO Gel. Constantly striving to improve their odor neutralizing products, they have developed a formulation that takes odor control to a new level. ONA PRO Gel is as close to odorless as ONA has ever come. Although it has a slight scent when sniffed in the container, the final result when working on powerful, noxious odors is simply a clean,