ADVANCED NUTRIENTS – Final Phase is a clearing flush solution. Using it will allow you to get rid of chemical aftertastes in your plant that can potentially linger after harvest. The product will cleanse the root zone in order to make the roots consume any remaining nutrients previously stored by them in their tissues. Final Phase is derived from free-form EDTA chelate and citric acid which remove excess nutrients and pollutants, including heavy metals (away from the root zone). This can reduce health risks you might get otherwise if you didn’t flush. As the name implies, ou can only use Final Phase during the last 2-3 weeks before harvest and before your final flush of pure water. 1L and 4L bottle sizes are available.